Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111600
Title: Thermal-Mechanical Characteristics of Stationary and Pulsating Gas-Flows in A Gas-Dynamic System in Relation the Exhaust System of An Engine
Authors: Plotnikov, L.
Issue Date: 2022
Publisher: Serbian Society of Heat Transfer Engineers
National Library of Serbia
Citation: Plotnikov L. Thermal-Mechanical Characteristics of Stationary and Pulsating Gas-Flows in A Gas-Dynamic System in Relation the Exhaust System of An Engine / L. Plotnikov // Thermal Science. — 2022. — Vol. 26. — Iss. 1. — P. 363-374.
Abstract: It is a relevant objective in thermal physics and in building reciprocating internal combustion engines (RICE) to obtain new information about the thermal-mechanical characteristics of both stationary and pulsating gas-flows in a complex gas-dynamic system. The article discusses the physical features of the gas dynamics and heat transfer of flows along the length of a gas-dynamic system typical for RICE exhaust systems. Both an experimental set-up and experimental techniques are described. An indirect method for determining the local heat transfer coefficient of gas-flows in pipe-lines with a constant temperature hot-wire anemometer is proposed. The regularities of changes in the instantaneous values of the flow rate and the local heat transfer coefficient in time for stationary and pulsating gas-flows in different elements of the gas-dynamic system are obtained. The regularities of the change in the turbulence number of stationary and pulsating gas-flows along the length of reciprocating internal combustion engines gas-dynamic systems are established (it is shown that the turbulence number for a pulsating gas-flow is 1.3-2.1 times higher than for a stationary flow). The regularities of changes in the heat transfer coefficient along the length of the engine's gas-dynamic system for stationary and pulsating gas-flows were identified (it was established that the heat transfer coefficient for a stationary flow is 1.05-1.4 times higher than for a pulsating flow). Empirical equations are obtained to determine the turbulence number and heat transfer coefficient along the length of the gas-dynamic system. © 2022. All Rights Reserved.
Keywords: EMPIRICAL EQUATIONS
EXHAUST SYSTEM
LOCAL HEAT TRANSFER
RECIPROCATING ENGINE
STATIONARY AND PULSATING FLOWS
TURBULENCE NUMBER
URI: http://hdl.handle.net/10995/111600
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85124730838
PURE ID: 29639778
ISSN: 0354-9836
metadata.dc.description.sponsorship: The work has been supported by the Russian Science Foundation (Grant No. 18-79-10003).
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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