CFD study of the Effect of Piston Crevice Volume on the Temperature Distribution in a Rapid Compression Machine

• Autorzy: Nyong Oku E. , Ebieto Celestine , Bassey Ene Ekpo , Azorshubel Ikem

Identyfikatory

DOI

10.12913/22998624/103380

• Języki publikacji: EN

Abstrakty

EN

One of the conditions for controlling the aerodynamics in the reaction chamber is designing a crevice volume on the surface of the piston head. The importance of the crevice volume is to contain the cool boundary layers generated as a resulting of the moving reactor piston. However, this crevice volume consequently drops the end gas pressure and temperature at the end of the stroke. The CFD study of the aerodynamic effect of a piston movement in a reaction chamber was modelled using the commercial code of Ansys Fluent and assuming a 2-Dimensional computational moving mesh. A starting optimal crevice volume of 282 mm3 was used for further optimisation. This resulted in five crevice lengths of 3 mm, 5 mm, 7 mm, 9 mm and 12 mm, respectively. The crevice height of 5 mm was found to improve the compressed gas pressure at the end of the stroke to about 2 bar and temperature about 17.7 K and also maintained a uniform temperature field, while that of 12 mm had the least peak compressed gas pressure. This study investigated the possible means of improving the peak pressure and temperature drop in a rapid compression machine by further optimisation of the crevice volume.

Słowa kluczowe

EN

rapid compression machine; CFD; crevice piston; piston stroke; optimisation

PL

maszyna do szybkiej kompresji; CFD; tłok szczelinowy; skok tłoka; optymalizacja

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2019
• Tom: Vol. 13, no 1
• Strony: 46--51
• Opis fizyczny: Bibliogr. 27 poz., fig.

Twórcy

autor

Nyong Oku E.

• Energy and Fluid Science Engineering Group, Department of Mechanical Engineering, Cross River University of Technology, Calabar, Nigeria

autor

Ebieto Celestine

• Department of Mechanical Engineering, University of Port Harcourt, Rivers State, Nigeria

autor

Bassey Ene Ekpo

• Energy and Fluid Science Engineering Group, Department of Mechanical Engineering, Cross River University of Technology, Calabar, Nigeria

autor

Azorshubel Ikem

• Energy and Fluid Science Engineering Group, Department of Mechanical Engineering, Cross River University of Technology, Calabar, Nigeria

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).