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Kim, Jong Rok
- Journal of the Korean Society for Aeronautical & Space Sciences
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- v.45 no.3
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- pp.241-251
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- 2017
Computational fluid dynamics analysis was performed for the case 3 of the EFD-CFD workshop. Solvers were used for three commercial CFD codes(Star-CCM+, Fluent and CFX) and an open source CFD code(SU2). The grid were generated four types depending on the total cells using commercial grid generation code(Pointwise). Mach number of 0.4 and 0.8, 2 degree angle of attack and Mach number of 0.9, 1 degree angle of attack were calculated. Similar pressure coefficient curve and normal force coefficient were showed from the coarse grid to fine grid of four codes. But there is a difference in the drag coefficient. The position of the shock wave was predicted forward as the discretization order increased in calculations using Star-CCM+ and Fluent. The computation time to converge, Fluent, Star-CCM +, CFX are in order, and SU2 takes much time to converge.
https://doi.org/10.5139/JKSAS.2017.45.3.241 인용 PDF KSCI

Kim, Hyung-Tae;Jeong, Weu-Bong;Kim, Heui-Won
- Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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- 2006.11a
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- pp.861-864
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- 2006
In general, 4-pole parameter and three-point method are used for predicting transmission loss which is one of characteristics of Muffler using CAE tools. However, these mehtods show different results from experiment when the flow effects are presented in practical model. In this parer, to overcome these problems, both Fluent and.Sysnoise are used to analyze the performance of extended inlet/outlet muffler including flow effects with varying flow velocity at inlet of duct. Flow fields and quadrupole source is calculated by Fluent. And Sysnoise is used to analyze acoustic performances of muffler with quadrupole source data extracted from Fluent. Finally, the variation of transmission loss is estimated according to various inlet flow velocity.
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Jeon, B.J.;Choi, H.G.;Lee, D.H.;Ha, J.P.
- 한국전산유체공학회:학술대회논문집
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- 2011.05a
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- pp.86-87
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- 2011
In this paper, a conjugate heat transfer around cylinder with heat generation was investigated. Both forced convection and conduction was considered in the present finite element simulation. A finite element formulation based on SIMPLE type algorithm was adopted for the solution of the incompressible Navier-Stokes equations. We compared the finite element solution with that of Ansys fluent 12.0, in which finite volume method was employed for spatial discretization. It was found that the finite element method gave more accurate solution than Ansys fluent 12.0. Further, it was found that the maximum temperature inside cylinder is positioned at the rear side due to the flow separation.
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Moon C. M.;Baek S. G.;Park S. O.
- 한국전산유체공학회:학술대회논문집
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- 2003.08a
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- pp.158-163
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- 2003
This paper assesses the two-equation turbulence models available in a commercial code, FLUENT, for heat transfer in a turbulent heated pipe flow. In case of flow under $Re_D=10,000$, Standard $\kappa-\epsilon$ and Realizable $\kappa-\epsilon$ models overpredict the Nusselt number about $20\%$ compared with the experimental correlation, and RNG $\kappa-\epsilon$ model overpredicts about $30\%$ when the two-layer zonal method is employed. When wall function method is adopted, all $\kappa-\epsilon$ models show better predictions. Standard $\kappa-\omega$ and SST $\kappa-\omega$ models have the dependency on the first grid point ($0.3). As Reynolds number becomes high, the predictions of all $\kappa-\epsilon$ and $\kappa-\omega$ models are in a good agreement with the experimental correlation.
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Jeong, Wang-Jo
- Proceedings of the Korean Society of Marine Engineers Conference
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- 2006.06a
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- pp.171-172
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- 2006
The anemometer on the radar mast of the vessel is equipped to measure wind direction and speed. This project was carried out to verify the position of anemometer which makes anemometer measure exact wind direction and speed. FLUENT was used to perform this analysis.
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