Flow map of foil undergoing combined fast and slow pitching

2021 ◽  
Vol 33 (10) ◽  
pp. 101902
Author(s):  
Li-Ming Chao ◽  
Md. Mahbub Alam ◽  
Chunning Ji ◽  
Hanfeng Wang
Keyword(s):  
Flow Map

Analysis of the natural circulation flow map uncertainties in an integral small modular reactor

2021 ◽  
Vol 378 ◽  
pp. 111156
Author(s):  
Seyed Ali Hosseini ◽  
Reza Akbari ◽  
Amir Saeed Shirani ◽  
Francesco D'Auria
Keyword(s):  
Natural Circulation ◽  
Circulation Flow ◽  
Small Modular Reactor ◽  
Flow Map

Experimental Characterization of a Modified Airlift Pump

2014 ◽  
Author(s):  
Afshin Goharzadeh ◽  
Keegan Fernandes
Keyword(s):  
Water Flow ◽  
Flow Rate ◽  
High Speed ◽  
Water Flow Rate ◽  
High Speed Photography ◽  
Two Phase ◽  
Inner Diameter ◽  
Airlift Pump ◽  
Flow Map ◽  
Churn Flow

This paper presents an experimental investigation on a modified airlift pump. Experiments were undertaken as a function of air-water flow rate for two submergence ratios (ε=0.58 and 0.74), and two different riser geometries (i) straight pipe with a constant inner diameter of 19 mm and (ii) enlarged pipe with a sudden expanded diameter of 19 to 32 mm. These transparent vertical pipes, of 1 m length, were submerged in a transparent rectangular tank (0.45×0.45×1.1 m3). The compressed air was injected into the vertical pipe to lift the water from the reservoir. The flow map regime is established for both configurations and compared with previous studies. The two phase air-water flow structure at the expansion region is experimentally characterized. Pipeline geometry is found to have a significant influence on the output water flow rate. Using high speed photography and electrical conductivity probes, new flow regimes, such as “slug to churn” and “annular to churn” flow, are observed and their influence on the output water flow rate and efficiency are discussed. These experimental results provide fundamental insights into the physics of modified airlift pump.

scholarly journals On the regularity of the flow map for the gravity-capillary equations

2013 ◽  
Vol 264 (3) ◽  
pp. 752-782 ◽  
Author(s):  
Robin Ming Chen ◽  
Jeremy L. Marzuola ◽  
Daniel Spirn ◽  
J. Douglas Wright
Keyword(s):  
Flow Map

Delivery Process for an Office Building in the Seattle Central Business District

2018 ◽  
Vol 2672 (9) ◽  
pp. 173-183 ◽  
Author(s):  
Haena Kim ◽  
Linda Ng Boyle ◽  
Anne Goodchild
Keyword(s):  
Value Added ◽  
Central Business District ◽  
Office Building ◽  
Vertical Movements ◽  
Urban Freight ◽  
Delivery Times ◽  
Final Segment ◽  
Business District ◽  
Flow Map ◽  
Urban Goods Movement

Movement of goods within a central business district can be very constraining with high levels of congestion and insufficient curb spaces. Pick-up and delivery activities encompass a significant portion of urban goods movement, and inefficient operations can negatively impact the already highly congested areas and truck dwell times. Identifying and quantifying the delivery processes within the building is often difficult. This paper introduces a systematic approach to examine freight movement, using a process flow map with quantitative delivery times measured during the final segment of the delivery process. This paper focuses on vertical movements such as unloading/loading activities, taking freight elevators, and performing pick-up/delivery operations. This approach allows visualization of the components of the delivery process and identification of the processes that consume the most time and have greatest variability. Using this method, the delivery process for an office building in downtown Seattle was observed, grouped into three major activities (or steps): 1. Entering, 2. Delivering, 3. Exiting. This visualization tool provides researchers and planners with a better understanding of the current practices in the urban freight system, and helps identify the non-value-added activities and time that can unnecessarily increase the overall delivery time.

scholarly journals Heat flow variations in the Antarctic Continent

2020 ◽  
Vol 3 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Suze Nei Pereira Guimarães ◽  
Fábio Pinto Vieira ◽  
Valiya Mannathal Hamza
Keyword(s):  
Heat Flow ◽  
Heat Budget ◽  
General Pattern ◽  
High Heat ◽  
Seismic Velocities ◽  
Antarctic Continent ◽  
Subglacial Lakes ◽  
Flow Map ◽  
The Antarctic ◽  
Heat Flow Variations

The present work provides a reappraisal of terrestrial heat flow variations in the Antarctic continent, based on recent advances in data analysis and regional assessments. The data considered include those reported at the website of IHFC and 78 additional sites where measurements have been made using a variety of techniques. These include values based on the Method of Magmatic Heat Budget (MHB) for 41 localities in areas of recent volcanic activity and estimates that rely on basal temperatures of glaciers in 372 localities that are known to host subglacial lakes. The total number of data assembled is 491, which has been useful in deriving a 10°x10° grid system of homogenized heat flow values and in deriving a new heat flow map of the Antarctic continent. The results reveal that the Antarctic Peninsula and western segment of the Antarctic continent has distinctly high heat flow relative to the eastern regions. The general pattern of differences in heat flow between eastern and western of Antarctic continent is in striking agreement with results based on seismic velocities.

scholarly journals Ethnographic Patterns Map for Traditional Heritage of Kadazan Dusun Community Using GIS Analysis

2021 ◽  
pp. 69-78
Author(s):  
K.T Sieng ◽  
O.V. Eboy
Keyword(s):  
Research Data ◽  
Future Generations ◽  
Gis Analysis ◽  
Spatial Form ◽  
Way Of Life ◽  
Gis Application ◽  
Density Flow ◽  
Overlay Technique ◽  
Flow Map ◽  
Density Pattern

Ethnography is a study of languages, systems of technology, economic, social organisations, knowledge, arts, and religion. Ethnographic features are essential to be preserved for peace, a stable way of life and conserving resources and the environment. The study of ethnography in society is necessary to maintain the tradition's legacy so that future generations can practice their ancestral heritage. Recently, the needs of GIS in the ethnographic mapping field are increasing as it has its effectiveness in this field. This study was carried out to map the locations related to the ethnography of Kadazan Dusun community in Sabah, Malaysia, in spatial form using GIS application. The research data was then analysed using migration density flow map with XY To Line technique, and then density pattern was conducted using an overlay technique. The findings of this study are expected to provide exposure to the community, especially the Kadazan Dusun regarding the dissemination of ethnographic features and areas with a high ethnographic density among the Kadazan Dusun community in Tambunan. Hence it will be used as a guide to the relevant parties to perform activities of preserving the traditional heritage of the Kadazan Dusun community in Tambunan.

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