Modeling a decrease in hydraulic losses during turbulent flow in a U-bend channel with a circular cavern with a large opening angle

Isaev S. A.; Kalinin E. I.; Tereshkin A. A.; Usachov A. E.

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Modeling a decrease in hydraulic losses during turbulent flow in a U-bend channel with a circular cavern with a large opening angle

机译：在具有大打开角度的圆形洞穴的U形弯通道中，湍流期间水力损失的减少建模

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The Reynolds equations for incompressible viscous fluid, closed using the Menter shear-stress-transfer model modified with allowance for the curvature of flow lines, have been numerically solved using multiblock computational technologies. The obtained solution has been used to calculate the turbulent flow in a U-bend channel containing a circular cavern with a variable opening angle. Predictions based on the results of numerical simulations agree well with the experimental data of Savelsberg and Castro at moderate cavern opening angles. It is established that hydraulic losses in a U-bend channel with completely open cavern are significantly (by similar to 25%) decreased as compared to those in a smooth channel at Re = 10(5).

机译：使用多块计算技术在数值上求解了不可压缩粘性流体的雷诺方程，该方程使用Menter剪应力传递模型进行了修正，并考虑了流线的曲率而进行了修正。所获得的解已用于计算U形弯曲通道中的湍流，该U形弯曲通道包含一个具有可变张角的圆形洞穴。基于数值模拟结果的预测与Savelsberg和Castro在中等洞穴开放角度下的实验数据非常吻合。已经确定，与Re = 10（5）的光滑通道相比，完全打开的洞穴的U形弯通道的水力损失显着降低（降低了25％）。

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《Technical physics letters: Letters to the Russian journal of applied physics》 |2015年第3期|共3页
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Isaev S. A.; Kalinin E. I.; Tereshkin A. A.; Usachov A. E.;
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正文语种 eng
中图分类工程物理学;物理学;
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1. Modeling a decrease in hydraulic losses during turbulent flow in a U-bend channel with a circular cavern with a large opening angle [J] . Isaev S. A., Kalinin E. I., Tereshkin A. A., Technical physics letters: Letters to the Russian journal of applied physics . 2015,第3期

机译：在具有大打开角度的圆形洞穴的U形弯通道中，湍流期间水力损失的减少建模
2. SIMULATION OF THE TURBULENT AIR FLOW OVER A CIRCULAR CAVITY WITH A VARIABLE OPENING ANGLE IN AN U-SHAPED CHANNEL [J] . S. A. Isaev, P. A. Baranov, A. E. Usachov, Journal of engineering physics and thermophysics . 2015,第4期

机译：U形通道中具有可变开角的圆孔内湍流流动的模拟
3. Modelling of Heat Transfer and Hydraulic Resistance of Turbulent Gas and Liquid Flow in Tubes with Circular Turbulizers [J] . Lobanov Igor Evgenjevich International Journal of Advancements in Technology . 2018,第4期

机译：圆形湍流管内湍流气体和液体流动的传热和水力阻力建模。
4. MODELLING OF HEAT TRANSFER AND HYDRAULIC RESISTANCE OF TURBULENT GAS AND LIQUID FLOW IN TUBES WITH CIRCULAR TURBULIZERS [C] . G.A. Dreitser, I.E. Lobanov International Conference on Compact Heat Exchangers and Enhancement Technology for the Process Industries; 20030929-20031003; Crete Island; GR . 2003

机译：圆形涡轮管内湍流气体和液流的传热和水力阻力模型
5. A Combined Numerical and Experimental Study of Heat Transfer of a Turbine Airfoil Cooling Channel with Angled Ribs and a 180-degree U-bend Turn [D] . Zhang, Tianshu. 2018

机译：涡轮机翼型冷却通道传热的组合数值和实验研究，具有成角度肋和180度U型弯曲转动
6. SPH modelling of depth‐limited turbulent open channel flows over rough boundaries [O] . Ehsan Kazemi, Andrew Nichols, Simon Tait, -1

机译：粗糙边界上有限深度的湍流明渠流的SPH建模
7. Study on Two-Phase Flow Behavior and Turbulent Excitation Mechanism in a U-Bend Tube-Bundle in Steam Generators Based on Air-Water Two-Phase Flow Model Tests. [O] . Nobuyuki Yamaguchi, Kaoru Sakata, Ayao Tsuge, 1993

机译：基于空气两相流模型试验的蒸汽发生器U形弯管束中两相流动行为及湍流激励机制研究。
8. Pressure Losses and Heat Transfer in Non-Circular Channels with Hydraulically Smooth Walls [R] . Malak, J. 1982

机译：具有水力光滑壁的非圆形通道的压力损失和传热

Modeling a decrease in hydraulic losses during turbulent flow in a U-bend channel with a circular cavern with a large opening angle

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