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OSRVM의 형상 매개변수에 따른 승용 차량의 공력성능 해석
한현욱(Hyun Wook Han),박현호(Hyun Ho Park),김문상(Moon Sang Kim),하종백(Jong Paek Ha),김용년(Yong Nyun Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
This study investigates the effects of OSRVM configurations such as mounting locations, housing heights, stalk heights, shrouding depths, stalk depths, and housing lengths, etc. on the aerodynamic performance of the passenger car. In order to validate the flow solver, FLUENT which is a very well-known commercial code, the flow field around an Ahmed body was analyzed numerically and compared with the experimental data. The predicted aerodynamic performance shows a good agreement with the experimental data. In the present paper, only three parameters, which are the mounting locations, stalk heights, and housing heights are studied and presented.
한현욱(Hyun Wook Han),박현호(Hyun Ho Park),김문상(Moon Sang Kim),하종백(Jong Paek Ha),김용년(Yong Nyun Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This study investigates the effects of OSRVM configurations such as bezel, stalk lengths, and head planview shape, etc. on the aerodynamic performance of the passenger car. In order to validate the flow solver, FLUENT which is a very well-known commercial code, the flow field around an Ahmed Body was analyzed numerically and compared with the experimental data. The predicted aerodynamic performance shows a good agreement with the experimental data. In the present paper, two parameters, which are the bezel and stalk length, are considered and presented. The other parameters will be studied in the near future.
OSRVM의 형상 및 장착 위치에 따른 승용 차량의 공력성능 해석
한현욱(Hyun Wook Han),김지웅(Ji Woong Kim),김문상(Moon Sang Kim),하종백(Jong Paek Ha),김용년(Yong Nyun Kim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
This paper investigates the effects of OSRVM configurations such as mounting locations, housing heights, stalk heights, etc. on the aerodynamic performance of a passenger car. In the present paper, only one parameter, which is the mounting locations, is studied and presented. The other parameters will be studied in the near future. The OSRVM is mounted at the locations of -10㎜, -5㎜, 10㎜, 20㎜, 30㎜, 40㎜, and 50㎜ from the original location of the OSRVM. FLUENT, which is a very well-known commercial code, is used to analyze the aerodynamic performance of the passenger car.

OSRVM의 형상 및 장착 위치가 차량의 공력성능에 미치는 영향
한현욱(Hyun Wook Han),박현호(Hyun Ho Park),김문상(Moon Sang Kim),하종백(Jong Paek Ha),김용년(Yong Nyun Kim) 한국자동차공학회 2013 한국 자동차공학회논문집 Vol.21 No.3
This study investigates the effects of OSRVM mounting location and its configurations such as stalk height and housing height on the aerodynamic performance of the passenger car. In order to validate the flow solver, FLUENT which is very well known commercial code, the flow field around an Ahmed Body was analyzed numerically and compared with the experimental data. The predicted aerodynamic performance and flow patterns around a car show good agreements with the experimental data. Mounting location and stalk height should be designed while OSRVM is mounted on the car to evaluate the aerodynamic performance precisely. Housing height, however, may be designed independent of the car because the aerodynamic interference between housing height and car configuration is negligible.
공공 보건의료 빅데이터를 이용한 신장 기능 이상 예측 모델 개발
장은찬, 홍문기, 장은정, 이채원, 김강현, 송규선, 이상준, 한현욱, 남상민 한국IT서비스학회 2020 한국IT서비스학회 학술대회 논문집 Vol.2020 No.-
추정사구체 여과율 eGFR값이 60미만일 경우 신장 기능에 이상이 있다고 추정할 수 있으며 eGFR값은 혈액검사를 통해 얻어지는 혈중 크레아티닌 수치를 이용하여 계산할 수 있다. 국민건강 영양조사 데이터베이스에서 혈액검사를 포함한 모든 변수들을 활용하여 신장 기능 이상 예측 모델을 개발하였고 성능을 평가하였다. 최종 모델을 구축하는데 이용된 변수들은 총 26개이며 일반적으로 만성 신질환의 요인으로 알려진 변수들 뿐만 아니라 영양 관련 변수들도 포함되어 있다. 본 연구는 기계학습 모델링을 통해 추출된 변수들을 이용하여 신장 기능 이상과 특정 변수와의 관계를 규명하는 연구에 활용될 수 있을 것이다.