scholarly journals The Study of Flow Resulting from Wave on Lhonga Beach, Aceh Besar

Omni-Akuatika ◽  
2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Muhammad Irham ◽  
Ichsan Setiawan
Keyword(s):  
Field Data ◽  
High Tide ◽  
Dynamic Interaction ◽  
Flow Dynamics ◽  
Marine Resources ◽  
Wave Flow ◽  
Average Depth ◽  
Approach Method ◽  
Explicit Finite Difference ◽  
Dominant Direction

Dynamic interaction between waves and topographic generate flow dynamics that affect Lhonga coast, Aceh Besar. To analyze the dynamics, the numerical model of currents induced by wave was developed with the explicit finite difference approach method. The model in this study was tested by verifying the result directly with the field data obtained previously. The model is applied in Lhoknga coast of Aceh Besar district with the aim to study how the dynamics of hydro-oceanography as one of the elements to support the preservation of the marine resources of the area. Based on the simulation, the results obtained that the wave occurred in Lhoknga beach relatively small with the dominant direction to the northwest and the maximum of wave height occurs during the high tide condition. The result also informed that the distribution of longshore currents is generally moving from west to east along the coast. The direction of dominant current occurs in the area of 10-15 meters from the shore with an average depth of 6 meters. Keywords: wave flow, flow dynamics, beach, hydro-oceanography

scholarly journals ANALISIS TANGGUNG JAWAB PENYIDIK KEPOLISIAN TERHADAP TERSANGKA YANG MELARIKAN DIRI DAN MASIH DALAM TAHAP PENAHANAN PENYIDIK PADA KEPOLISIAN DAERAH SULAWESI BARAT

2021 ◽  
Vol 4 (1) ◽  
pp. 69-72
Author(s):  
Muhammad Ikrar AR ◽  
Marwan Mas ◽  
Abd. Haris Hamid
Keyword(s):  
Field Data ◽  
Secondary Data ◽  
Primary Data ◽  
Legal Research ◽  
The West ◽  
Legal Provisions ◽  
Approach Method

Penelitian ini bertujuan Untuk mengetahui dan menganalisis tanggung jawab penyidik terhadap tersangka yang melarikan diri dan masih dalam tahap penahanan penyidik pada Kepolisian Daerah Sulawesi Barat dan Untuk mengetahui dan menganalisis bentuk sanksi yang dijatuhkan kepada penyidik terhadap tersangka yang melarikan diri dan masih dalam tahap penahanan penyidik pada Kepolisian Daerah Sulawesi Barat .Jenis penelitian yang digunakan adalah jenis penelitian Yuridis Empirik, yaitu penelitian hukum mengenai pemberlakuan atau implementasi ketentuan hukum normatif secara in action pada setiap peristiwa hukum tertentu yang terjadi dalam masyarakat , metode pendekatan yuridis empirik digunakan untuk mengkaji atau menganalisis data primer yang berupa data - data di lapangan tempat penelitian, hasil wawancara langsung yang diajukan ke responden kemudian dihubungkan dengan data - data sekunder berupa bahan - bahan hukum, untuk menganalisis tanggung jawab Penyidik Kepolisian Terhadap Tersangka Yang Melarikan Diri Dan Masih Dalam Tahap Penahanan Penyidik Pada Kepolisian Daerah Sulawesi Barat. This study aims to identify and analyze the responsibilities of investigators for suspects who fled and are still in the detention stage of investigators at the West Sulawesi Regional Police and to find out and analyze the form of sanctions imposed on investigators of suspects who fled and are still in the detention stage of investigators at the West Sulawesi Regional Police. The type of research used is empirical, juridical research, which is legal research regarding the enforcement or implementation of normative legal provisions in action on every particular legal event that occurs in society. The empirical juridical approach method is used to examine or analyze primary data in the form of field data from the location where the research is conducted. The results of direct interviews submitted to the respondents are then linked to secondary data in the form of legal materials, to analyze the responsibility of the Police Investigator for the suspect who escaped and is still in the Investigator's detention stage at the West Sulawesi Regional Police.

Dynamic Interaction within Multiple Limited Entry Fractures in Horizontal Wells: Theory, Implications and Field Verification

2015 ◽  
Author(s):  
Ali Daneshy
Keyword(s):  
Field Data ◽  
Small Difference ◽  
Horizontal Wells ◽  
Dynamic Interaction ◽  
Principal Stresses ◽  
Multiple Fractures ◽  
Dynamic Interactions ◽  
Limited Entry ◽  
Actual Field ◽  
Adjacent Fractures

Abstract Interaction between adjacent fractures in horizontal wells has been recognized and discussed for some time. However, the scope of these discussions has been narrow and covers a limited number of actual field situations. In this paper, effects of dynamic interactions between multiple fractures are analyzed for different operational scenarios. These include effects of passive (previously fractured), active (being fractured) and multiple active fractures. A new aspect of this study, not previously covered in the literature, is examination of fracture inclination with respect to the wellbore. Paper will show that; The effect of dynamic interaction between adjacent fractures is largest when there is small difference between magnitudes of the two horizontal principal stresses, high net fracturing pressure, and short spacing between fractures.Dynamic fracture interaction is most significant when multiple fractures are created simultaneously (e. g., in Plug & Perf completions with limited entry design).There are important basic differences between dynamic interactions caused by transverse and inclined fractures. The influence is larger with inclined fractures.In multiple fracturing treatments based on limited entry, if the created fractures are transverse, dynamic interaction may cause shorter fractures to deflect and coalesce with longer adjacent fractures, thus further accelerating their growth.Compared to a single fracture, multiple limited entry fractures in horizontal wells require higher extension pressure. However, interaction between fractures is not likely to cause a significantly higher pressure in successive pumping stages in the same well.Dynamic interaction between multiple simultaneous fractures has little impact on ISIP values between successive pumping stages.In cases of small difference between the two horizontal principal stresses and high net fracturing pressure dynamic interaction can cause fracture deviations of more than 45°. This will increase the possibility of linkage between shorter fractures with longer adjacent fractures and accelerating their growth.The results presented here are in line with actual field data. The analysis presented here differs from some existing solutions in certain critical assumptions regarding the effect of a passive fracture on the propagation of an active fracture. However, the present results are in line with actual field data trends.

scholarly journals Turbulent flow dynamics and mass transport processes in a natural surface storage zone using field data and numerical simulations

2018 ◽  
Vol 40 ◽  
pp. 05064 ◽  
Author(s):  
Jorge Sandoval ◽  
Cristián Escauriaza ◽  
Emmanuel Mignot ◽  
Luca Mao
Keyword(s):  
Mass Transport ◽  
Turbulent Flow ◽  
Numerical Simulations ◽  
Field Data ◽  
Large Scale ◽  
Transport Model ◽  
Transport Processes ◽  
Flow Dynamics ◽  
Surface Velocity ◽  
Mean Flow

In this work, the turbulent flow dynamics and mass transport mechanisms in a natural SSZis analyzed. The study site is a river reach of the Lluta River, located in northern Chile in a high-altitude Andean environment known as the Altiplano (~ 4,000 masl) The large-scale turbulent coherent structures are characterized using field measurements and 3D numerical simulations. The detailed topography was measured through DGPS and digital image processing while the surface velocity field, through the LSPIV technique. Regarding the field data, numerical simulations were performed using a DES turbulence model coupled with a 3D passive scalar transport model for Re = 45,800. The coherent structure dynamics in the shear layer was identified as the main mechanism that drives the mass and momentum transport processes between the SSZ and the main channel. Also, the 2D vortical structures of the mean flow are analyzed within the lateral cavity, since they have a strong influence in mass transport, increasing mean residence times due to their lower velocities and longer exchange timescales. Finally, the performance of two simplified transport models is analyzed to represent the mass transport dynamics at larger scales.

scholarly journals Mud Flow Dynamics at Gas Seeps (Nirano Salse, Italy)

2021 ◽  
Author(s):  
Beatrice Maria Sole Giambastiani ◽  
Marco Antonellini ◽  
Massimo Nespoli ◽  
Massimo Bacchetti ◽  
Antonino Calafato ◽  
...  
Keyword(s):  
Sedimentary Rock ◽  
Field Data ◽  
Fluid Pressure ◽  
Flow Dynamics ◽  
Mud Volcanoes ◽  
Liquid Ratio ◽  
Shallow Aquifers ◽  
Gps Rtk ◽  
Gas Seeps ◽  
Mud Flow

Abstract The Nirano Salse, known since the Roman Times, are one of the most beautiful and scenic mud volcanoes areas of Italy with thousands of visitors every year. In this work, we apply hydrogeological techniques to characterize mud levels in the Salse by means of GPS-RTK positioning and continuous level logging within mud conduits. Our results suggest that different mud levels in mud volcanoes clusters are due to the different gas-liquid ratio in the conduits and not necessarily exclude interconnection at depth, a hypothesis, on the other hand, that seems strengthened by mud level time series correlations. The presence of shallow aquifers at a depth of 5 to 30 m is also supported by our field data. These shallow aquifers may provide a temporary storage for the ascending gas and when fluid pressure in these aquifers exceeds the tensional strength of the sedimentary rock, leakage of fluids to the surface would occur.

Empirical Assessment of a Markovian Traffic Flow Model

1997 ◽  
Vol 1591 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Chang-Jen Lan ◽  
Gary A. Davis
Keyword(s):  
Traffic Flow ◽  
Traffic Control ◽  
Field Data ◽  
High Order ◽  
Flow Dynamics ◽  
Model Parameters ◽  
Flow Models ◽  
Real Time Traffic ◽  
Flow Parameters ◽  
Traffic Flow Models

Previous research efforts on developing traffic flow models to account for traffic flow dynamics over transportation networks have centered on macroscopic high-order models. It is unclear whether traffic flow dynamics can be well described using a high-order model formulation, but for real-time traffic control, it is important to have tractable yet accurate models. Described here is a set of tractable traffic flow models based on the Markovian compartment concept. The basic models can be further modified to produce effects analogous to high-order models in capturing unstable traffic behavior during congestion. Special treatments are also made to account for the effects of conflicting flow on the predicted turning exit flow at intersection approaches. The proposed models are evaluated using field data. The results indicate that all the model parameters, including traffic flow parameters and gap acceptance parameters, are reasonably estimated, and the underlying models provide good fits to the field data.

scholarly journals Short-term flow dynamics of a retreating tidewater glacier: LeConte Glacier, Alaska, U.S.A.

2001 ◽  
Vol 47 (159) ◽  
pp. 567-578 ◽  
Author(s):  
S. O’Neel ◽  
K. A. Echelmeyer ◽  
R. J. Motyka
Keyword(s):  
Water Pressure ◽  
High Tide ◽  
Diurnal Variations ◽  
Flow Dynamics ◽  
Ocean Tides ◽  
Short Term ◽  
Tidewater Glacier ◽  
The Mean ◽  
And Storage ◽  
Analysis Of Motion

AbstractAn analysis of motion in the terminus region of LeConte Glacier, Alaska, U.S.A., delineates mechanisms that are important to tidewater glacier stability. This glacier is undergoing rapid retreat. Since 1995 it has retreated 2 km and thinned >125 m at the present location of the terminus. Ice velocities in this region are quite high; at the terminus they exceed 27 m d−1. Our analysis reveals that fluctuations in speed and surface elevation are forced by ocean tides, surface melt and precipitation. The nearterminus ice speed is 180° out of phase with the tide, such that high tide corresponds to low speed. Smaller, melt-forced diurnal variations in speed are present throughout the lowermost 7 km. Speed-ups in excess of 10% of the mean often occur after rainstorms as a result of increased basal water pressure and storage, but the relation is not simple. The velocity does not vary over the spring and summer seasons.

scholarly journals Strategi Kebertahanan Serta Keberlangsungan Usaha Batik Katura di Trusmi Kulon, Kecamatan Plered, Kabupaten Cirebon, Jawa Barat

2020 ◽  
Vol 6 (2) ◽  
pp. 106
Author(s):  
Yori Pusparani
Keyword(s):  
Research Method ◽  
Field Data ◽  
Business Strategies ◽  
Ecological Environment ◽  
Internal Factors ◽  
The Social ◽  
Market Opportunities ◽  
Approach Method ◽  
Main Factors ◽  
Political Economic

This study aims to examine the survival strategy and sustainability of the Katura batik business in Trusmi Kulon, Cirebon Regency. The increase in similar craft businesses and competition with modern textiles has made Trusmi batik entrepreneurs have to carry out strategies so that their business can survive. The concept of analysis of this study is based on observing the behavior and actions of rational and effective batik entrepreneurs in accordance with the social, political, economic and ecological environment in which they live. This research method uses qualitative research methods by compiling field data in the form of documentation and interviews with resource persons consisting of batik craftsmen. While data on the development of batik business in Trusmi itself was obtained by the  literature approach method. The results of the study can be explained that the survival and sustainability of the Katura batik business is determined by internal factors, namely batik entrepreneurial behavior and external factors such as geographical conditions and market opportunities. The behavior of batik Trusmi entrepreneurs, shown by their tenacity, loyalty, hard work, and creativity, is one of the main factors that determine the success of a  business. In addition, the survival and sustainability of batikbusiness is determined by the entrepreneurs in carrying out their business strategies.

scholarly journals The role of alkalinity generation in controlling the fluxes of CO<sub>2</sub> during exposure and inundation on tidal flats

2012 ◽  
Vol 9 (10) ◽  
pp. 4087-4097 ◽  
Author(s):  
P. A. Faber ◽  
A. J. Kessler ◽  
J. K. Bull ◽  
I. D. McKelvie ◽  
F. J. R. Meysman ◽  
...  
Keyword(s):  
Reactive Transport ◽  
Field Data ◽  
Transport Model ◽  
Dissolved Inorganic Carbon ◽  
High Tide ◽  
Co2 Flux ◽  
Tidal Flats ◽  
Model Simulations ◽  
Reduced Sulfur

Abstract. Dissolved inorganic carbon (DIC), gaseous CO2 and alkalinity fluxes from intertidal sediments were investigated during periods of exposure and inundation, using laboratory core incubations, previously published field data and reactive transport model simulations. In the incubations and previous field data, it was found that during periods of alkalinity production (attributed to the accumulation of reduced sulfur species within the sediment), the flux of DIC out of the sediment was greater during inundation than the gaseous CO2 flux during exposure by a factor of up to 1.8. This finding was supported by computational simulations which indicated that large amounts of sulfate reduction and reduced sulfur burial (FeS) induce an alkalinity flux from the sediment during high tide conditions. Model simulations also found that the amount of reactive Fe in the sediment was a major driver of net alkalinity production. Our finding that CO2 fluxes can be significantly lower than total metabolism during exposure has implications for how total metabolism is quantified on tidal flats.

scholarly journals APPLICATION OF GALAWI TRAFFIC MANAGEMENT &COMMAND CENTER(GTMCC) TO IMPROVE THE EFFICIENCY OFPUBLIC SERVICES IN TEGAL POLICESTATION

2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Umar Ma'ruf ◽  
Muhammad Adil Aristo
Keyword(s):  
Public Service ◽  
Traffic Management ◽  
Field Data ◽  
Public Services ◽  
Secondary Data ◽  
Primary Data ◽  
Centralized Control ◽  
Police Station ◽  
Approach Method ◽  
Command Center

This study aims to determine and analyze: Description GTMCC of Tegal Police Station, Factors that influence the application GTMCC of Tegal Police Station, and implementation of Galawi Traffic Management & Command Center (GTMCC) can improve the efficiency of public services at Tegal Police Station. The approach method used is empirical juridical. The data used is secondary data(legal material) and primary data, i.e. data from the field. Data were then analyzed qualitatively and presented descriptively analytically. Research conclusions: (1)GTMCC is a form of public service of the police with centralized control that will facilitate the elements of the Tegal Police Station leadership in the process of monitoring and evaluating the handling of public complaints. Applications in GTMCC consist of Sipoci, GPS, TMC, IMM, Website, and Social Media, and RLR; (2)Factors of affecting the implementation of GTMC Tegal Police consist of human factors, services, budget, and infrastructure; (3)Application GTMCC increases the efficiency of public services in the Tegal Police Station more effective access, quality services, better and more efficient processes, systems and communication, more transparent and faster decision making, and a more empowered community.

scholarly journals Kinetic algorithms for the modeling of conductive fluids flow on high performance computational systems

2019 ◽  
Vol 489 (6) ◽  
pp. 552-557
Author(s):  
B. N. Chetverushkin ◽  
A. V. Saveliev ◽  
V. I. Saveliev
Keyword(s):  
Mathematical Modeling ◽  
Heat Transfer ◽  
Fluid Flow ◽  
High Performance ◽  
Flow Dynamics ◽  
Electrically Conducting ◽  
Electrically Conducting Fluid ◽  
Complex Heat Transfer ◽  
Approach Method ◽  
Computational Systems

This letter presents the results of the mathematical modeling of processes of electrically conducting fluid flow dynamics for complex heat transfer systems. The study was carried out based on detailed calculations on parallel high performance computational systems on the basis of the kinetically consistent magnetogasdynamic approach, adjusted for this class of problems. The kinetically consistent algorithm adapts well to the architecture of high performance computational systems with massive parallelism and makes it possible to conduct effective research of complex heat transfer systems with high resolution. The article presents the approach, method and algorithms as well as the results of the mathematical modeling.

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