Analytical Solutions for the Modeled k EquationSource: Journal of Applied Mechanics:;2008:;volume( 075 ):;issue: 004::page 44501Author:Rafik Absi
DOI: 10.1115/1.2912722Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The semitheoretical function of and (1993, Turbulence in Open-Channel Flows, A. A. Balkema, ed., Rotterdam, The Netherlands) for the turbulent kinetic energy k is valid only where local equilibrium is a good approximation. From an estimation of the difference between the energy production and its dissipation G−ϵ, we present in this study an analytical solution for the modeled k equation. Comparisons with direct numerical simulation data of turbulent channel flows show good agreement. A universal function for k+ is deducted for y+<20.
keyword(s): Turbulence , Equilibrium (Physics) , Approximation , Equations , Flow (Dynamics) , Open channels (Hydraulics) , Energy generation , Kinetic energy AND Energy dissipation ,
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| contributor author | Rafik Absi | |
| date accessioned | 2017-05-09T00:26:40Z | |
| date available | 2017-05-09T00:26:40Z | |
| date copyright | July, 2008 | |
| date issued | 2008 | |
| identifier issn | 0021-8936 | |
| identifier other | JAMCAV-26708#044501_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/137287 | |
| description abstract | The semitheoretical function of and (1993, Turbulence in Open-Channel Flows, A. A. Balkema, ed., Rotterdam, The Netherlands) for the turbulent kinetic energy k is valid only where local equilibrium is a good approximation. From an estimation of the difference between the energy production and its dissipation G−ϵ, we present in this study an analytical solution for the modeled k equation. Comparisons with direct numerical simulation data of turbulent channel flows show good agreement. A universal function for k+ is deducted for y+<20. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Analytical Solutions for the Modeled k Equation | |
| type | Journal Paper | |
| journal volume | 75 | |
| journal issue | 4 | |
| journal title | Journal of Applied Mechanics | |
| identifier doi | 10.1115/1.2912722 | |
| journal fristpage | 44501 | |
| identifier eissn | 1528-9036 | |
| keywords | Turbulence | |
| keywords | Equilibrium (Physics) | |
| keywords | Approximation | |
| keywords | Equations | |
| keywords | Flow (Dynamics) | |
| keywords | Open channels (Hydraulics) | |
| keywords | Energy generation | |
| keywords | Kinetic energy AND Energy dissipation | |
| tree | Journal of Applied Mechanics:;2008:;volume( 075 ):;issue: 004 | |
| contenttype | Fulltext |