Assessment of Turbulence Models for Heated Wall Jet Flow

2011 ◽  
Author(s):  
Ghanshyam Singh ◽  
Arvind Pattamatta ◽  
Hukam Mongia
Keyword(s):  
Turbulence Models ◽  
Jet Flow ◽  
Heated Wall ◽  
Wall Jet ◽  
Wall Jet Flow

Three-dimensional numerical modeling of unconfined and confined wall-jet flow with two different turbulence models

2010 ◽  
Vol 37 (4) ◽  
pp. 576-587 ◽  
Author(s):  
Ali Khosronejad ◽  
C. D. Rennie
Keyword(s):  
Shear Stress ◽  
Finite Volume ◽  
Three Dimensional ◽  
Turbulence Models ◽  
Jet Flow ◽  
Hydrodynamic Characteristics ◽  
Wall Jet ◽  
Bed Shear Stress ◽  
Closure Models ◽  
Wall Jet Flow

Wall-jet flow is an important flow field in hydraulic engineering, and its applications include flow from the bottom outlet of dams and sluice gates. An in-house three-dimensional (3-D) finite-volume Reynolds-averaged-Navier-Stokes (RANS) numerical model predicts the hydrodynamic characteristics of wall jets with square and rectangular source geometry. Either the low-turbulence Reynolds number k–ω or the standard k–ε turbulence closure models are applied. The calculated results for velocity profile and bed shear stress in both longitudinal and vertical directions compare favourably with both the published experimental results and the FLUENT® finite volume model. The two closure models are compared with the k–ω model, displaying 4% greater average accuracy than the k–ε model. Finally, the influence of lateral confinement of the receiving channel on wall-jet hydrodynamics is investigated, with decreased longitudinal deceleration and decreased bed shear stress observed in a confined jet. This has important implications for sediment transport in the receiving channels downstream of sluice gates.

NUMERICAL INVESTIGATION OF CONJUGATE HEAT TRANSFER FROM LAMINAR WALL JET FLOW OVER A SHALLOW CAVITY

2018 ◽  
Vol 49 (12) ◽  
pp. 1151-1170 ◽  
Author(s):  
Maheandera Prabu Paulraj ◽  
Rajesh Kanna Parthasarathy ◽  
Jan Taler ◽  
Dawid Taler ◽  
Pawel Oclon ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Numerical Investigation ◽  
Conjugate Heat Transfer ◽  
Jet Flow ◽  
Wall Jet ◽  
Shallow Cavity ◽  
Wall Jet Flow

Experiments on streamwise vortices in curved wall jet flow

1995 ◽  
Vol 7 (12) ◽  
pp. 2978-2988 ◽  
Author(s):  
O. John E. Matsson
Keyword(s):  
Jet Flow ◽  
Wall Jet ◽  
Streamwise Vortices ◽  
Wall Jet Flow

Dynamics of wall jet flow under external pulsation

2021 ◽  
Vol 33 (9) ◽  
pp. 095103
Author(s):  
Abhishek Mishra ◽  
Lyazid Djenidi ◽  
Amit Agrawal
Keyword(s):  
Jet Flow ◽  
Wall Jet ◽  
Wall Jet Flow

Research on Turbulent Boundary Layer Development of Hydraulic Jump Region with the Theory of Plane Adhesive Wall Jet Flow

2012 ◽  
Vol 212-213 ◽  
pp. 1141-1146
Author(s):  
Zhi Chang Zhang ◽  
Ruo Bing Li ◽  
Ying Zhao ◽  
Ming Huan Fu
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Hydraulic Jump ◽  
Rectangular Channel ◽  
Jet Flow ◽  
Wall Jet ◽  
Boundary Layer Development ◽  
Wall Jet Flow ◽  
Momentum Integral ◽  
Layer Development

【Objective】The calculation of turbulent boundary layer development in hydraulic jump region is put forwarded.【Method】According to the analysis of predecessors’ researches about plane adhesive wall jet flow of rectangular channel, Based on the momentum integral equation of turbulent boundary layer and the velocity distribution formula of adhesive wall jet flow, turbulent boundary layer development of hydraulic jump region in rectangular channel is researched.【Result】Formulas of the development of boundary layer in hydraulic jump region and drag coefficient are obtained, the accuracy of equations are verified by the example. 【Conclusion】The calculation has enlightened effect on the hydraulic characteristics of hydraulic jump.

A wall jet flow-through detector for the sensing of quinine and paraquat ions

2000 ◽  
Vol 12 (3) ◽  
pp. 133-137 ◽  
Author(s):  
Bahruddin Saad ◽  
Yeoh Bee-Leng ◽  
Muhammad Idiris Saleh
Keyword(s):  
Jet Flow ◽  
Wall Jet ◽  
Flow Through ◽  
Wall Jet Flow
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