Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 57-68 |
| Number of pages | 12 |
| Journal | Journal of Flow Control, Measurement & Visualization |
| Volume | 2013 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jul 2013 |
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All Science Journal Classification (ASJC) codes
- Fluid Flow and Transfer Processes
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Discrete tracer point method to evaluate turbulent diffusion in circular pipe flow. / Widiatmojo, Arif; Sasaki, Kyuro; Priagung, Widodo Nuhindro; Sugai, Yuichi.
In: Journal of Flow Control, Measurement & Visualization, Vol. 2013, No. 1, 07.2013, p. 57-68.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Discrete tracer point method to evaluate turbulent diffusion in circular pipe flow
AU - Widiatmojo, Arif
AU - Sasaki, Kyuro
AU - Priagung, Widodo Nuhindro
AU - Sugai, Yuichi
PY - 2013/7
Y1 - 2013/7
N2 - Diffusion of a solute in turbulent flows through a circular pipe or tunnel is an important aspect of environmental safety. In this study, the diffusion coefficient of turbulent flow in circular pipe has been simulated by the Discrete Tracer Point Method (DTPM). The DTPM is a Lagrangian numerical method by a number of imaginary point displacement which satisfy turbulent mixing by velocity fluctuations, Reynolds stress, average velocity profile and a turbulent stochastic model. Numerical simulation results of points’ distribution by DTPM have been compared with the analytical solution for turbulent plug-flow. For the case of turbulent circular pipe flow, the appropriate DTPM calculation time step has been investigated using a constant β, which represents the ratio between average mixing lengths over diameter of circu- lar pipe. The evaluated values of diffusion coefficient by DTPM have been found to be in good agreement with Taylor’s analytical equation for turbulent circular pipe flow by giving β = 0.04 to 0.045. Further, history matching of experimen- tal tracer gas measurement through turbulent smooth-straight pipe flow has been presented and the results showed good agreement.
AB - Diffusion of a solute in turbulent flows through a circular pipe or tunnel is an important aspect of environmental safety. In this study, the diffusion coefficient of turbulent flow in circular pipe has been simulated by the Discrete Tracer Point Method (DTPM). The DTPM is a Lagrangian numerical method by a number of imaginary point displacement which satisfy turbulent mixing by velocity fluctuations, Reynolds stress, average velocity profile and a turbulent stochastic model. Numerical simulation results of points’ distribution by DTPM have been compared with the analytical solution for turbulent plug-flow. For the case of turbulent circular pipe flow, the appropriate DTPM calculation time step has been investigated using a constant β, which represents the ratio between average mixing lengths over diameter of circu- lar pipe. The evaluated values of diffusion coefficient by DTPM have been found to be in good agreement with Taylor’s analytical equation for turbulent circular pipe flow by giving β = 0.04 to 0.045. Further, history matching of experimen- tal tracer gas measurement through turbulent smooth-straight pipe flow has been presented and the results showed good agreement.
UR - http://file.scirp.org/pdf/JFCMV_2013071515482147.pdf
U2 - 10.4236/jfcmv.2013.12008
DO - 10.4236/jfcmv.2013.12008
M3 - Article
VL - 2013
SP - 57
EP - 68
JO - Journal of Flow Control, Measurement & Visualization
JF - Journal of Flow Control, Measurement & Visualization
SN - 2329-3322
IS - 1
ER -