Influence of the diffuser on the drag coefficient of a solar car

• Autorzy: Mierzejewska P. , Cieśliński A. , Jodko D.
• Języki publikacji: EN

Abstrakty

EN

The purpose of the research was to design a solar vehicle for Bridgestone World Solar Challenge competition which takes place biannually in Australia. The article, however, presents the aerodynamic research on the car body, especially on the exit diffuser. Numerous CFD simulations of different diffuser shapes were performed in ANSYS CFX software. The paper presents the results of pressure distribution on the body and velocity contours. The drag force acting on the car body is dependent on the pressure distribution. The article includes comparison of corresponding drag coefficient values for different cases. Furthermore, the variation of the lift force depending on the shape of the bodywork was also taken into consideration. The research shows that slight differences in the construction of the exit diffuser correspond to noticeable changes in the drag coefficient values (0.138 minimum, 0.168 maximum) and significant changes in the lift force (minimum 71 N, maximum 160 N).

Słowa kluczowe

EN

drag coefficient; numerical simulation; solar car; aerodynamics; drag force

PL

współczynnik oporu aerodynamicznego; symulacja numeryczna; samochód słoneczny; aerodynamika; siła oporu

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 22, nr 2
• Strony: 509--519
• Opis fizyczny: Bibliogr. 5 poz., il. kolor.

Twórcy

autor

Mierzejewska P.

• Institute of Turbomachinery, Lodz University of Technology, Lodz, Poland

autor

Cieśliński A.

• Institute of Turbomachinery, Lodz University of Technology, Lodz, Poland

autor

Jodko D.

• Institute of Turbomachinery, Lodz University of Technology, Lodz, Poland

Bibliografia

• [1] White, F. M.: Fluid mechanics, , 5th. Boston: McGraw-Hill Book Company, Boston, 2003.
• [2] Jeżowiecka-Kabsch, K., Szewczyk, H.: Mechanika płynów, Oficyna Wydawnicza Politechniki Wrocławskiej, Wroclaw, 2001.
• [3] Anderson, R.: Online estimation of rolling resistance and air drag for heavy duty vehicles, KTH Industrial Engineering and Management, Stockholm, 2012.
• [4] Kosma, Z.: Podstawy mechaniki płynów, Politechnika Radomska, Radom, 2005.
• [5] Vennard, J. K.: Elementary fluid mechanics, Read Books, Ltd, New Yok, 2013.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).