نتایج جستجو برای: 180 degree bend

تعداد نتایج: 342813  

ژورنال: علوم آب و خاک 2010
مرادی, امین, مسجدی, علیرضا,

In order to study the effect of spur dike position in the bend on the process of scoring, some tests were done in a laboratory flume of Plax glass material with 180 deg bend and R/B=4/7. In this research, by setting an spur dike in the laboratory flume with positions of 30,60,90,120,150and 160 degrees, discharge rates of 20 ,24 and 28 Lit/s , and fixed depth of 13 cm, the process of scoring aro...

ژورنال: علوم آب و خاک 2017

Spur dikes are the most common hydraulic structures for river bank protection. Since the construction of this structure causes higher velocities around it, this structure is exposed to erosion. Riprap around the structure nose is one of the most common and economic way to protect spur dike. The main aim of this study is to investigate the riprap stability in a mild 90 degrees bend. Experiments ...

Journal: :Energies 2023

Although inlet bent pipes are usually adopted due to limited installation space, the influences of different bend on flow characteristics and performance centrifugal compressors still unclear. The numerical simulation a compressor is established validated by experimental results with case straight pipe. Then, internal 90-degree pipe (p90) Z-shaped (pz) simulated discussed. show that adoption tw...

Journal: :Universal Journal of Mechanical Engineering 2015

Journal: :تحقیقات آب و خاک ایران 0
لیلا مهردار دانشجوی کارشناسی ارشد دانشگاه ارومیه محمد همتی هیئت علمی دانشگاه ارومیه مهدی یاسی هیات علمی گروه مهندسی آب دانشگاه ارومیه

bendway weirs are an important tool in multi-purpose erosion control and are implemented to control erosion, restore streams, and improve habitat. these structures create a hydraulic effect that reduces erosion on the outer bank of a bend by reducing flow velocities near the outer bank and reduce the concentration of currents on the outer bank creating better current alignment through the bend....

Journal: :Discrete Applied Mathematics 2014
Daniel Heldt Kolja B. Knauer Torsten Ueckerdt

We investigate edge-intersection graphs of paths in the plane grid regarding a parameter called the bend-number. The bend-number is related to the interval-number and the track-number of a graph. We provide new upper and lower bounds of the bend-number of any given simple graph in terms of the coloring number, edge clique covers and the maximum degree. We show that the bend-number of an outerpl...

1998
David R. Wood

Some recent algorithms for 3-dimensional orthogonal graph drawing use no more than 3 bends per edge route. It is unknown if there exists a graph requiring a 3-bend edge route. In this paper we present an algorithm for 2-bend 3-dimensional orthogonal grid drawing of maximum degree 5 graphs. In addition 2-bend 3-dimensional grid drawings of the 6-regular multi-partite graphs are given.

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