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소형 승용 차량의 그릴 형상이 차량의 공력 성능에 미치는 영향에 관한 수치해석 연구
김재민(Jaemin Kim),조형규(Hyeongkyu Cho),김택기(Taekgi Kim),김문상(Moonsang Kim),김용석(Yongsuk Kim),김용년(Yongnyun Kim) 한국자동차공학회 2015 한국 자동차공학회논문집 Vol.23 No.1
A numerical parametric study has been accomplished to figure out the effect of grille shape built in a small passenger car on the aerodynamic performance such as drag and mass flow rate through CRFM(Condenser Radiator Fan Module). Three grille opening parameters and three grille mesh parameters are selected and adopted to a simple shape passenger car model. This research will provide a design guideline for grille opening geometry and mesh shape in the grille. FLUENT, which is very well known commercial code, hires k-? turbulence model at the driving speed of 110km/h with moving wall boundary condition. A porous media condition is prepared to estimate the pressure drop amount through CRFM parts.
수치해석을 통한 자동차 사이드 미러 주위의 공력 및 소음해석
박기환,박현호,임태헌,최은동,김문상,Park, Kihwan,Park, Hyunho,Lim, Taehun,Choi, Eundong,Kim, Moonsang 항공우주시스템공학회 2009 항공우주시스템공학회지 Vol.3 No.4
Aerodynamic noise is becoming the major source of annoyance for modern cars recently and is caused by many different noise sources in a car. Appropriate CFD technologies, therefore, have been developed to resolve the noise problems related with aerodynamics. It is necessary for designers to fully understand the relationship between vehicle aerodynamics and wind noise acoustics. In this study, we simulate the flow fields around two different shapes of side mirror models of passenger car and analyze the noise phenomena around one side mirror model that has lower drag than the other model using Fluent 6.3.
수치해석을 통한 자동차 사이드 미러 주위의 공력 및 소음해석
박기환,박현호,임태헌,최은동,김문상,Park, Kihwan,Park, Hyunho,Lim, Taehun,Choi, Eundong,Kim, Moonsang 항공우주시스템공학회 2010 항공우주시스템공학회지 Vol.4 No.2
Aerodynamic noise is becoming the major source of annoyance for modern cars recently and is caused by many different noise sources in a car. Appropriate CFD technologies, therefore, have been developed to resolve the noise problems related with aerodynamics. It is necessary for designers to fully understand the relationship between vehicle aerodynamics and wind noise acoustics. In this study, we simulate the flow fields around two different shapes of side mirror models of passenger car and analyze the noise phenomena around one side mirror model that has lower drag than the other model using Fluent 6.3.
이민준,차두근,배희정,권기현,김지웅,김문상,Lee, Minjun,Cha, Dooguen,Bae, Heejung,Kwan, Gihyun,Kim, Jiwoong,Kim, Moonsang 항공우주시스템공학회 2009 항공우주시스템공학회지 Vol.3 No.3
Reduction of the aerodynamic drag is one of the most hot issues of car industries. Many researchers have studied in the area of drag reduction methodology using experimental tools or numerical tools. In general, car shape design is the main focus to reduce the drag in aerodynamic research area. However, not many people have studied the aerodynamic interference between running cars to figure out the drag variation. In this research, the aerodynamic interference between two running cars have been analyzed by using numerical tools, FLUENT 6.2. Several different models of cars and two different distances between two running cars are considered.