語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Centrifugal fans: Similarity, scali...
~
Sardar, Asad Mohammad.
FindBook
Google Book
Amazon
博客來
Centrifugal fans: Similarity, scaling laws, and fan performance.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Centrifugal fans: Similarity, scaling laws, and fan performance./
作者:
Sardar, Asad Mohammad.
面頁冊數:
365 p.
附註:
Source: Dissertation Abstracts International, Volume: 62-04, Section: B, page: 2028.
Contained By:
Dissertation Abstracts International62-04B.
標題:
Engineering, Aerospace. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3010865
ISBN:
9780493209937
Centrifugal fans: Similarity, scaling laws, and fan performance.
Sardar, Asad Mohammad.
Centrifugal fans: Similarity, scaling laws, and fan performance.
- 365 p.
Source: Dissertation Abstracts International, Volume: 62-04, Section: B, page: 2028.
Thesis (Ph.D.)--State University of New York at Buffalo, 2001.
Centrifugal fans are rotodynamic machines used for moving air continuously against moderate pressures through ventilation and air conditioning systems. There are five major topics presented in this thesis: (1) analysis of the fan scaling laws and consequences of dynamic similarity on modelling; (2) detailed flow visualization studies (in water) covering the flow path starting at the fan blade exit to the evaporator core of an actual HVAC fan scroll-diffuser module; (3) mean velocity and turbulence intensity measurements (flow field studies) at the inlet and outlet of large scale blower; (4) fan installation effects on overall fan performance and evaluation of fan testing methods; (5) two point coherence and spectral measurements conducted on an actual HVAC fan module for flow structure identification of possible aeroacoustic noise sources.
ISBN: 9780493209937Subjects--Topical Terms:
1018395
Engineering, Aerospace.
Centrifugal fans: Similarity, scaling laws, and fan performance.
LDR
:03465nmm 2200325 4500
001
1828441
005
20071030074144.5
008
130610s2001 eng d
020
$a
9780493209937
035
$a
(UMI)AAI3010865
035
$a
AAI3010865
040
$a
UMI
$c
UMI
100
1
$a
Sardar, Asad Mohammad.
$3
1917339
245
1 0
$a
Centrifugal fans: Similarity, scaling laws, and fan performance.
300
$a
365 p.
500
$a
Source: Dissertation Abstracts International, Volume: 62-04, Section: B, page: 2028.
500
$a
Adviser: William K. George, Jr.
502
$a
Thesis (Ph.D.)--State University of New York at Buffalo, 2001.
520
$a
Centrifugal fans are rotodynamic machines used for moving air continuously against moderate pressures through ventilation and air conditioning systems. There are five major topics presented in this thesis: (1) analysis of the fan scaling laws and consequences of dynamic similarity on modelling; (2) detailed flow visualization studies (in water) covering the flow path starting at the fan blade exit to the evaporator core of an actual HVAC fan scroll-diffuser module; (3) mean velocity and turbulence intensity measurements (flow field studies) at the inlet and outlet of large scale blower; (4) fan installation effects on overall fan performance and evaluation of fan testing methods; (5) two point coherence and spectral measurements conducted on an actual HVAC fan module for flow structure identification of possible aeroacoustic noise sources.
520
$a
A major objective of the study was to identity flow structures within the HVAC module that are responsible for noise and in particular "rumble noise" generation. Possible mechanisms for the generation of flow induced noise in the automotive HVAC fan module are also investigated. It is demonstrated that different modes of HVAC operation represent very different internal flow characteristics. This has implications on both fan HVAC airflow performance and noise characteristics.
520
$a
It is demonstrated from principles of complete dynamic similarity that fan scaling laws require that Reynolds, number matching is a necessary condition for developing scale model fans or fan test facilities. The physical basis for the fan scaling laws derived was established from both pure dimensional analysis and also from the fundamental equations of fluid motion.
520
$a
Fan performance was measured in a three times scale model (large scale blower) in air of an actual forward curved automotive HVAC blower. Different fan testing methods (based on AMCA fan test codes) were compared on the basis of static pressure measurements. Also, the flow through an actual HVAC fan-impeller/diffuser section in water was observed with a flow visualization technique using a shear-thickening dye (in addition to a conventional dye). Full dynamic similarity was maintained between RVAC operation in water as when operated in air. Recommendations are provided both for further investigation of critical flow regions with more sophisticated measurement methods and for improved fan-scroll design to reduce possible aeroacoustic noise with improved aerodynamic performance.
590
$a
School code: 0656.
650
4
$a
Engineering, Aerospace.
$3
1018395
650
4
$a
Engineering, Automotive.
$3
1018477
650
4
$a
Engineering, Mechanical.
$3
783786
690
$a
0538
690
$a
0540
690
$a
0548
710
2 0
$a
State University of New York at Buffalo.
$3
1017814
773
0
$t
Dissertation Abstracts International
$g
62-04B.
790
1 0
$a
George, William K., Jr.,
$e
advisor
790
$a
0656
791
$a
Ph.D.
792
$a
2001
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3010865
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9219304
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入