The gas-dynamic unsteadiness effects on heat transfer in the intake and exhaust systems of piston internal combustion engines / Plotnikov L. V.,Zhilkin B. P. // INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER. - 2017. - V. 115, l. B. - P. 1182-1191.

ISSN/EISSN:

0017-9310 / 1879-2189

Type:

Article

Abstract:

This article presents the results of experimental research into the gas-dynamic and heat-exchange parameters of gas flows in the intake and exhaust pipelines of piston ICEs (internal combustion engine) taking into account the nonstationary nature of the gas exchange processes. Some characteristic times of transient processes (recovery time and relaxation time) are established during the gas flow recovery in round pipelines. Based on the obtained data, the degree of non-stationarity or unsteadiness of the gas dynamic processes in piston ICE pipelines can be established. It is demonstrated that there are two types of resolution for gas-dynamic unsteadiness. It is established that unsteadiness reduces the instantaneous local heat transfer intensity in the pipelines of piston ICEs by 1.3-2.5 times. A method is proposed for taking the thermomechanical unsteadiness into account in thermal calculations by applying the heat transfer mobility correction coefficient for classical equations that are used to calculate the local heat transfer coefficient. (C) 2017 Elsevier Ltd. All rights reserved.

Author keywords:

Gas-dynamic unsteadiness; Local heat transfer; Gas exchange processes; Intake and exhaust pipelines; Internal combustion engines FLOW; PIPE; ANEMOMETER

DOI:

10.1016/j.ijheatmasstransfer.2

Web of Science ID:

ISI:000414108400103

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	DEC
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
EISSN	1879-2189
Keywords-Plus	FLOW; PIPE; ANEMOMETER
Research-Areas	Thermodynamics; Engineering; Mechanics
Web-of-Science-Categories	Thermodynamics; Engineering, Mechanical; Mechanics
Author-Email	plotnikovlv@mail.ru boris.zhilkin@gmail.com
Funding-Acknowledgement	Russian Foundation for Basic Research {[}16-38-00004]
Funding-Text	The work was supported by the Russian Foundation for Basic Research (Grant No. 16-38-00004).
Number-of-Cited-References	33
Journal-ISO	Int. J. Heat Mass Transf.
Doc-Delivery-Number	FL3FN