Turbulence model and validation of air flow in crossflow turbine nozzle

Hariyotejo Pujowidodo, Ahmad Indra Siswantara, Budiarso, Gun Gun R. Gunadi, Asyari Daryus

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

As an initial analysis, numerical simulation has more advantages in saving time and costs compared with experiments. Variations in flow conditions and geometry can be adjusted easily to get results. CFD methods with k-ϵ model, RNG k-ϵ model and Reynolds Stress Model (RSM) widely used in research on objects and different conditions, to be produced on the appropriate model to use and the development of value constants. Modeling studies appropriately in the turbulent flow simulation in the crossflow turbine nozzle is done to get a more accurate result. The study was conducted by comparing the results of the simulation k-ϵ model, RNG k-ϵ model and Reynolds Stress Model (RSM), which is validated by the test results. The air gas has a static pressure of 1,55 bar, a temperature of 971 K, a density of 0,39 kg/m3, a viscosity of 4×10-5 m2/s and a mass flow rate of 0,32 kg/s. By comparing the simulation results k-ϵ model, RNG k-ϵ model and Reynolds Stress Model (RSM), which is validated by the test results the third model of turbulent give good results to predict the distribution of velocity and pressure of the fluid flow in the crossflow turbine nozzle. As for predicting the turbulent kinetic energy, turbulent dissipation rate, and turbulent effective viscosity, RSM turbulence models recommend to be used for complex physical geometry.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Thermofluids 2017, THERMOFLUID 2017
EditorsThomas Hohne, Indro Pranoto, Deendarlianto, Akmal Irfan Majid, Ardi Wiranata, Adhika Widyaparaga, Masahiro Takei
PublisherAmerican Institute of Physics Inc.
ISBN (Print)9780735417175
DOIs
Publication statusPublished - 16 Aug 2018
Event9th International Conference on Thermofluids 2017, THERMOFLUID 2017 - Yogyakarta, Indonesia
Duration: 9 Nov 201710 Nov 2017

Publication series

NameAIP Conference Proceedings
Volume2001
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference9th International Conference on Thermofluids 2017, THERMOFLUID 2017
Country/TerritoryIndonesia
CityYogyakarta
Period9/11/1710/11/17

Keywords

  • RNG k-ϵ Model
  • Reynolds Stress Model (RSM)
  • Turbulence Model
  • k-ϵ Model

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