Laminar natural convection an enclosure with varying aspect ratio/ (Record no. 86475)

MARC details
000 -LEADER
fixed length control field 02763nam a22002057a 4500
003 - CONTROL NUMBER IDENTIFIER
control field KE-MeUCS
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20181107154555.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 181107b xxu||||| |||| 00| 0 eng d
020 ## - INTERNATIONAL STANDARD BOOK NUMBER
International Standard Book Number
022 ## - INTERNATIONAL STANDARD SERIAL NUMBER
Source
040 ## - CATALOGING SOURCE
Transcribing agency KE-MeUCS
Modifying agency KE-MeUCS
050 ## - LIBRARY OF CONGRESS CALL NUMBER
Classification number QC327.M8 2018
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Musili, Peninnah Ngina
245 ## - TITLE STATEMENT
Title Laminar natural convection an enclosure with varying aspect ratio/
Statement of responsibility, etc Peninnah Ngina Musili
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc Meru,
Name of publisher, distributor, etc Peninnah Ngina Musili,
Date of publication, distribution, etc 2018.
300 ## - PHYSICAL DESCRIPTION
Extent xii, 90p.
500 ## - GENERAL NOTE
General note A Thesis Submitted in partial fulfillment for the Degree of Masters of Science in Applied Mathematics in School of Pure and Applied Sciences of Meru University of Science and Technology
520 ## - SUMMARY, ETC.
Summary, etc A buoyant driven flow of air an infinitely long enclosure with a uniformly heated wall was numerically investigated. A 2-dimensional, laminar, steady and in compressible flow was considered and the effect of varying the aspect ratio (AR=L/W) of the enclosure and continuity,momentum and the energy equations simulating the flow were solved by the finite volume method. The phenomenon of natural heat convection is applied in the electronic industry for cooling heat-generating electronic systems, in the agriculture sector for drying and preservation of agriculture, natural produce and for even distribution of heat in greenhouses. In architecture, natural heat convection is applied for thermal insulation of buildings. Results on the velocity profiles established that buoyancy occurred and there was flow of hot air to the upper part of cavity constituting the primary velocities. There was also flow of air towards the free stream constituting the secondary velocities. For all AR and GR values the primary velocities decreased smoothly untill a critical velocity was attained then the flow become streamlined. Increase in Gr values increases the rate at which the critical velocity is attained. Increase in AR raises the value of critical velocity required for a flow to become stream lined. Secondary velocities increases smoothly until a maximum velocity is attained then the flow become streamlined for all AR and Gr values. Increase in AR values lowers the maximum velocity reached for a flow to become streamlined. For all AR values the maximum velocity component was high for higher Gr values. The primary and secondary velocity profiles are more streamlined for AR values beyond one. This increases with increase in AR. Results on the temperature profiles showed that increase in Gr leads to a substantial exchange of hot air from the hot region to the cold region making temperature profiles more skewed. Increase in AR makes the profiles more evenly distributed leading to an even distribution of temperatures.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Library of Congress Classification
Koha item type Thesis
Cataloguer
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Home library Current library Shelving location Date acquired Source of acquisition Cataloger Total Checkouts Full call number Barcode Date last seen Price effective from Koha item type
    Library of Congress Classification     Meru University Meru University Short Loan 07/11/2018       QC327.M8 2018 17-29792 07/11/2018 07/11/2018 Thesis

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