scholarly journals DETERMINATION OF WAVE CREST ELEVATIONS FOR SLAMMING FORCES ON JETTY WITH VERTICAL WALL END

2017 ◽  
pp. 7
Author(s):  
Esin Ozkan Cevik ◽  
Yalcin Yuksel ◽  
Burak Aydogan ◽  
Berna Ayat Aydogan ◽  
Tugce Yuksel
Keyword(s):  
Numerical Model ◽  
Physical Model ◽  
Wave Height ◽  
Vertical Wall ◽  
Wave Disturbance ◽  
Wave Crest ◽  
Shore Protection ◽  
Model Study ◽  
Vertical Walls

Wave disturbance study for a closed end jetty conducted both in laboratory and through a numerical model is presented in this study. Shore protection structures and the structures at the end of the piers are considered for the calculation of the wave disturbance map. The connection locations of the jetties have been designed as vertical walls. These vertical structures and armored waterfront structures would affect the wave behavior in the study area along jetty axis causing reflection of waves and therefore the wave height in front of the structures might increase. This study intends to clarify wave agitation problem by using a numerical model with the help of physical model study.

scholarly journals MATHEMATICAL AND PHYSICAL WAVE DISTURBANCE MODELLING COMPLIMENTARY TOOLS

1986 ◽  
Vol 1 (20) ◽  
pp. 3
Author(s):  
I. Berenguer ◽  
P.A. Madsen ◽  
M. Rubjerg ◽  
A. Kej
Keyword(s):  
Numerical Model ◽  
Mathematical Modelling ◽  
Physical Model ◽  
Wave Disturbance

This paper presents comparisons between physical and numerical model reproductions on the basis of comprehensive wave disturbance studies of a major Spanish port. Mathematical modelling has reached in many cases a degree of reliability comparable to that of a physical model, but it is essential that both types of modelling systems are validated against measurements.

Joint use of the HEC-2 model and a physical model for floodline delineation upstream of a bridge

1989 ◽  
Vol 16 (1) ◽  
pp. 1-7 ◽  
Author(s):  
P. Wisner ◽  
R. Townsend ◽  
J. Sabourin ◽  
D. Leitch
Keyword(s):  
Numerical Model ◽  
Key Words ◽  
Physical Model ◽  
Flood Protection ◽  
The North ◽  
Model Study ◽  
Bridge Crossing ◽  
Thames River ◽  
The Town

This paper reports the findings of a physical model study of backwaters generated in the vicinity of the Queen Street bridge crossing of the North Thames River in the town of St. Marys, Ontario. Flood profiles generated in the physical model are compared with those observed in the field and with "HEC-2"-generated profiles. Certain limitations of the HEC-2 model, in regards to bridge hydraulics, are identified. The physical model is also used to compare several flood protection alternatives for the town, for both the 100- and the 500-year flows. Floodline delineation was based on both physical model and HEC-2 simulations. The former were adopted for the reach simulated by the physical model, with the latter being employed for the reaches upstream of the physically modelled reach. Key words: physical model, numerical model, bridge backwater, floodline delineation.

scholarly journals Analisis Model Fisik Revetment Buis Beton. (Hal. 106-117)

2019 ◽  
Vol 5 (1) ◽  
pp. 106
Author(s):  
Dendy Nurrochim ◽  
Yessi Nirwana Kurniadi
Keyword(s):  
Reflection Coefficient ◽  
Physical Model ◽  
Model Analysis ◽  
Public Works ◽  
Coastal Protection ◽  
Shore Protection ◽  
Pipe Model ◽  
Model Study ◽  
Concrete Pipe ◽  
Run Up

ABSTRAKRevetment adalah salah satu struktur pelindung pantai yang berfungsi pelindung dari abrasi. Saat ini perkembangan material penyusun revetment sangat beragam salah satunya buis beton. Kekuatan buis beton sebagai saluran drainase sudah teruji dalam bidang pengelolaan sumber daya air tetapi untuk bahan penyusun revetment belum pernah diuji. Berdasarkan hal itu Balai Teknologi Pantai Kementerian Pekerjaan Umum dan Perumahan Rakyat akan melakukan analisis model fisik guna menyusun pedoman pelaksanaan konstruksi untuk menjamin kekuatan konstruksi revetment buis beton. Penelitian ini melanjutkan ide dari Balai Teknologi Pantai Kementerian Pekerjaan Umum dan Perumahan Rakyat dengan melakukan penelitian analisis model fisik revetment buis beton. Penelitian melakukan uji model fisik yang dibentukdari pipa PVC berdiameter 10 cm dan tinggi 5 cm dengan kemiringan pantai 28,61°. Analisis model fisik dilakukan untuk mengetahui kemampuan buis beton dalam merefleksikan gelombang dan run up terjadi dengan 3 variasi kedalaman. Hasil dari pengujian model fisik diperoleh koefisien refleksi pada kedalaman 30 cm sebesar 0,3 ― 0,42 dengan persentase gelombang tereduksi 50%―65 % dan koefisien refleksi untuk kedalaman 40 cm sebesar 0,8 ― 0,98 dengan persentase gelombang tereduksi 2% ―14 %.Kata kunci: revetment,koefisien refleksi,run-up,buis beton ABSTRACTRevetment is one of the coastal protection structure use as a shore protection from abrasion. Nowdays, development of revetment material was currently many variation one of them are concrete pipe. The strength of concrete pipe as a drainage channel had been tested in the field of water resources management but for the revetment this material has never been investigated. Based on this, Ministry of Public Works and Housing would conduct a physical model analysis to prepare guidelines for the construction to ensure the strength of the construction of the concrete pipe revetment. This research will continue the idea using concrete pipe as revetment with physical model study. In physical study, the concrete pipe model was made from PVC pipe with 10 cm diameter and 5 cm height on a 28,61° slope. Physical model analysis was carried out to determine the ability of concrete pipe in reflecting waves and run-up occurs with 3 depth variations. The results of physical model testing obtained reflection coefficient at a depth of 30 cm of 0.3 ― 0.42 with a percentage of reduction 50% ― 65% and reflection coefficient for a depth of 40 cm of 0.8 ― 0.98 with a reduced percentage of 2%― 14%.Keywords: revetment, coefficient of reflection, run-up,concrete pipe

scholarly journals Two-Dimensional Numerical Modeling of Flow in Physical Models of Rock Vane and Bendway Weir Configurations

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 458
Author(s):  
Drew C. Baird ◽  
Benjamin Abban ◽  
S. Michael Scurlock ◽  
Steven B. Abt ◽  
Christopher I. Thornton
Keyword(s):  
Numerical Modeling ◽  
Physical Model ◽  
Numerical Models ◽  
Hydraulic Performance ◽  
Physical Models ◽  
Protection Measures ◽  
Design Engineers ◽  
Model Study ◽  
Study Results ◽  
Wide Range

While there are a wide range of design recommendations for using rock vanes and bendway weirs as streambank protection measures, no comprehensive, standard approach is currently available for design engineers to evaluate their hydraulic performance before construction. This study investigates using 2D numerical modeling as an option for predicting the hydraulic performance of rock vane and bendway weir structure designs for streambank protection. We used the Sedimentation and River Hydraulics (SRH)-2D depth-averaged numerical model to simulate flows around rock vane and bendway weir installations that were previously examined as part of a physical model study and that had water surface elevation and velocity observations. Overall, SRH-2D predicted the same general flow patterns as the physical model, but over- and underpredicted the flow velocity in some areas. These over- and underpredictions could be primarily attributed to the assumption of negligible vertical velocities. Nonetheless, the point differences between the predicted and observed velocities generally ranged from 15 to 25%, with some exceptions. The results showed that 2D numerical models could provide adequate insight into the hydraulic performance of rock vanes and bendway weirs. Accordingly, design guidance and implications of the study results are presented for design engineers.

scholarly journals Apparent Young’s Modulus of the Adhesive in Numerical Modeling of Adhesive Joints

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 328
Author(s):  
Kamil Anasiewicz ◽  
Józef Kuczmaszewski
Keyword(s):  
Numerical Model ◽  
Young’S Modulus ◽  
Adhesive Joint ◽  
Young's Modulus ◽  
Precise Determination ◽  
Adhesive Joints ◽  
Experimental Conditions ◽  
Element Simulation ◽  
Joint Material

This article is an evaluation of the phenomena occurring in adhesive joints during curing and their consequences. Considering changes in the values of Young’s modulus distributed along the joint thickness, and potential changes in adhesive strength in the cured state, the use of a numerical model may make it possible to improve finite element simulation effects and bring their results closer to experimental data. The results of a tensile test of a double overlap adhesive joint sample, performed using an extensometer, are presented. This test allowed for the precise determination of the shear modulus G of the cured adhesive under experimental conditions. Then, on the basis of the research carried out so far, a numerical model was built, taking the differences observed in the properties of the joint material into account. The stress distribution in a three-zone adhesive joint was analyzed in comparison to the standard numerical model in which the adhesive in the joint was treated as isotropic. It is proposed that a joint model with three-zones, differing in the Young’s modulus values, is more accurate for mapping the experimental results.

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