跳到主要內容

臺灣博碩士論文加值系統

(3.231.230.177) 您好!臺灣時間:2021/08/04 02:56
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:楊加風
研究生(外文):Jia-Feng Yang
論文名稱:氣體軸承節流孔口之氣體質流量CFD分析與實驗研究
論文名稱(外文):Experimental and CFD Study on the Mass Flow-rate Characteristics of Gas through Restrictors in Aerostatic Bearing
指導教授:任志強任志強引用關係
指導教授(外文):Jyh-Chyang Renn
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:機械工程系碩士班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:81
中文關鍵詞:氣靜壓軸承節流孔CFD質流量傳導值臨界壓力比
外文關鍵詞:Critical Pressure RatioMass flow-rateConductive ValueCFDAerostatics BearingRestrictor
相關次數:
  • 被引用被引用:19
  • 點閱點閱:603
  • 評分評分:
  • 下載下載:119
  • 收藏至我的研究室書目清單書目收藏:0
本篇論文旨在探討氣靜壓軸承內孔口型節流器(restrictor)在不同尺寸下所具有的質流量(mass flow-rate)特性。傳統在設計氣靜壓軸承時,對於流經各種節流孔的質流量模式均是採用一已沿用數十年且是基於理想噴嘴所推導出的數學模式。因此,我們合理假設,流經不同幾何形狀節流孔的質流量數學模式是不同於流經理想噴嘴的質流量模式。於1989年,ISO6358規範了氣體元件質流量決定方法及數學模式,其引用了傳導值(sonic conductance) C及臨界壓力比(critical pressure ratio) b二項參數來描述極具非線性的氣體質流量值。本文將以CFD及實驗方式來求得流經氣靜壓軸承內孔口型節流器在不同尺寸下之傳導值C及臨界壓力比b的描述函數。
The purpose of this study is to study the mass flow-rate characteristics through orifice-type restrictor with different diameter in aerostatic bearings by experimental and CFD approach. In the conventional design of gas-lubricated aerostatic bearings, the mass flow-rates of gas through different types of restrictors are all derived from a well-known mathematical model, which is originally developed to describe the mass flow-rate property through an ideal nozzle. It is reasonable to doubt if there is any difference between the properties of mass flow-rate through different restrictors in aerostatic bearings and that through a nozzle. In 1989, ISO6358 is defined as a standard to specify the method to determine the mass flow-rate for pneumatic components. It uses the “Sonic conductance C” and “Critical pressure ratio b” to describe the non-linear mass flow-rate. In this study, therefore, we plan to conduct a series of CFD simulations together with experiments according to ISO 6358. We successfully find the conductive value and the critical pressure ratio for orifice-type aerostatic bearing restrictor with different diameters.
中文摘要 i
英文摘要 ii
誌 謝 iii
目 錄 iv
表目錄 vi
圖目錄 vii
符號說明 ix
第一章 緖論 1
1.1前言 1
1.2研究動機 1
1.3孔口氣流特性介紹 2
a.流量特性 3
b.流量計算式 3
1.4文獻回顧 4
第二章 氣體軸承的簡介 13
2.1氣體軸承的原理及種類 13
2.2氣體軸承的特色 15
2.2.1氣體軸承的優點 15
2.2.2氣體軸承的缺點 16
2.3節流器的種類 17
第三章 實驗設備 21
第四章 CFD數值模擬軟體簡介 26
4.1 CFDRC 26
4.1.1 CFD-GEOM軟體 26
4.1.2 CFD-ACE+軟體 28
4.1.3 CFD-VIEW軟體 29
4.1.4 CFDRC軟體使用流程 29
4.1.5 有限體積法介紹 31
4.1.6 流體流動的基本理論 32
4.2 UNIC CFD 35
第五章 實驗與模擬結果 38
5.1 孔口節流器(具有氣室)之實驗與模擬 38
5.1.1 孔口節流器(具有氣室)之實驗與模擬結果比較 41
5.2孔口節流器(無氣室)之模擬 45
5.2.1孔口節流器(無氣室)之模擬結果比較 47
5.3孔口節流器(長節流孔)之模擬 52
5.3.1孔口節流器(長節流孔)之模擬結果比較 54
5.4孔口節流器(具有氣室)之實驗與模擬結果討論 58
第六章 結論與未來展望 65
6.1結論 65
6.2未來展望 65
參考文獻 66
附錄A 69
自 傳 72
1.Powell JW. , 1970, Design of aerostatic bearing, Machinery Publishing Co. Ltd.
2.Launder B.E. and Spalding, D.B., 1974, “The Numerical Computation of Turbulent Flows”, Computer Methods in Applied Mechanics and Engineering.
3.ISO 6358:1989 Pneumatic fluid power -- Components using compressible fluids -- Determination of flow-rate characteristics.
4.Kogure K, Kaneko R, Ohtani K. ,1982, “A study on characteristics of surface restriction compensated gas bearing with T-shaped grooves,” Bulletin, JSME , Vol. 25, No. 210, pp. 2039-2045.
5.Yoshimoto S., Tamura J., Nakamura T., 1999, “Dynamic tilt characteristics of aerostatic rectangular double-pad thrust bearings with compound restrictors,” Tribology International, Vol. 32, pp. 731-738.
6.O. Ohligschlaeger, 1990, “Simulation servopneumatischer Zylinder unter besonderer Beruecksichtigung der Thermodynamik”, Proc. of the 9th Aachener Fluidtechnisches Kolloquim, No.3, pp. 123-140.
7.Pu,J.and Weston, R.h., 1990 ,”Steady State Analysis of Pneumatic ervo Drives”, Proc Instn Mesh Engrs, Vol204, pp. 377-387.
8.Berger H, 1992, “Numerical Simulation of Gas Flow in Pneumatic Components”, Forschung im Ingenieurwesen-Engineering Research Bd. 58 Nr. 3
9.Hisanori UENO, Atsushi OKAJIMA, Hiroyoshi TANAKA and Takanori HASEGAWA, 1994, “Noise Measurement and Numerical Simulation of Oil Flow in Pressure Control Valves”, JSME, Series B, Vol. 37, No. 2, pp. 336-341.
10.CFDRC, 2003, ‘‘CFDRC User Manual’’, CFD Research Corporation, Huntsville, Alabama 35805, U.S.A.
11.UNIC, 1995, UNIC General Purpose CFD Design Tool, Engineering Sciences, Inc., Alabama, U.S.A.
12.N. D. Manring and R. E. Johnson, 1997, “Optimal Orifice Geometry for a Hydraulic Pressure-Reducing Valve”, Vol. 199, pp. 467-473.
13.Boffey DA, Barrow AA, Deardent JK., 1985,“Experimental investigation into the performance of an aerostatic industrial thrust bearing,” Tribology International, Vol. 18, No. 4, pp. 245-253.
14.Dipl.-Ing.jan Bredau, Prof. Dr.-Ing. S.Helduser, 1999, “Numerical Flow Calculation in Pneumatics and Comparison with Measurement Results”, Scandinavian International Conference on Fluid Power.
15.Nakamura T, Yoshimoto S., 1996, “Static tilt characteristics of aerostatic rectangular double-compound restrictors,” Tribology International, Vol. 29, No. 2, pp. 145-152.
16.Chen MF., Lin YT., 2002, “Static behaviour and dynamic stability analysis of grooved rectangular aerostatic thrust bearings by modified resistance network method,” Tribology International , Vol. 35, pp. 329-338.
17.E. Pink and K. Stout. ,1978, ‘‘Design Procedures for Orifices Compensated Gas Journal Bearings Based on Experimental Data’’, Tribology International February, pp. 63-75.
18.Jyh-Chyang Renn and Chih-Hung Hsiao , 2004, ‘‘Experimental and CFD study on the mass flow-rate characteristic of gas through orifice-type restrictor in aerostatic bearings’’, Tribology International , Vol.37, pp. 309-315.
19.Mitsuru SENOO,Huping ZHANG and Naotake ONEYAMA, 2002, ‘‘Study and Suggestions on Pneumatic Component Flow-rate Characteristics’’,Fluid Power.Fifth JFPS International Symposium, pp. 67-72.
20.Kiyoshi KUROSHITA, 2002, ‘‘Study on Measurement Method of Flow-rate Characteristics of Pneumatic Solenoid valve’’, Fluid Power.Fifth JFPS International Symposium, pp. 73-78.
21.Lin G, Tojiro A, Ichiro I. ,1998, “A computer simulation method for dynamic and stability analysis of air bearing,” Wear, Vol. 126, pp. 307-319.
22.賴耿陽,1999,最新應用空氣壓學,復漢出版社。
23.謝勝治,2003,圖控式程式語言-Labview(含自動量測暨資料擷取),全華圖書公司。
24.任志強,2003,液氣壓學,上課講義,國立雲林科大學機械系。
25.任志強,2003,伺服液氣壓學,上課講義,國立雲林科技大學機械所。
26.林宗億,2000,低壓鑄造機用氣壓比例壓力控制閥設計分析,國立雲林科技大學機械研究所,碩士論文。
27.顏安慶,2000,方形氣體軸承與口形氣浮導軌之特性分析,國立雲林科技大學機械研究所,碩士論文。
28.蕭志弘,2002,應用CFD於氣壓閥口流量特性C、b值之研究,國立雲林科技大學機械研究所,碩士論文。
29.林育廷,2002,氣靜壓導軌系統之分析與實驗研究,國立彰化師範大學機械研究所,碩士論文。
30.王彥欣,2000,氣靜壓高速主軸止推軸承設計與性能分析,國立彰化師範大學工業教育研究所,碩士論文。
31.十晉合一,1985,氣體軸承從設計到製造,復漢出版社。
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
無相關期刊