Release Time:2022-07-01  Hits:

Indexed by: Journal Article

Date of Publication: 2022-06-30

Journal: 振动与冲击

Issue: 5

Page Number: 192-198

ISSN: 1000-3835

Abstract: Part of heat energy produced by burning oil is transferred to the piston in a combustion engine.When the power density of the piston exceeds 0.3 kW/cm2,the piston must be cooled with a cooling chamber.In order to reveal heat transfer and flow characteristics of nanofluid in the cooling chamber,heat transfer and visualization tests with different types of nanofluid were performed in a straight circular pipe under reciprocating vibration.The test results showed that the optimal filling rate for heat transfer is 53.4％;the frequency of reciprocating vibration and the hydraulic radius of particles are all proportional to the convection heat transfer coefficient of the cooling chamber;the fluid mixure effect is the best when the rotation angle of rotor is with in 180° to 270°;the flowing disord level of nanofluid is better than that of pure water in a reciprocating vibration cycle.

Note: 新增回溯数据