外文翻譯--離心泵葉輪出口流量測(cè)量(中文-資料下載頁(yè)
2025-05-12 06:08本頁(yè)面
【導(dǎo)讀】摘要：對(duì)特定轉(zhuǎn)速為150[rpm,m^3/min,m]的離心泵的流量進(jìn)行了實(shí)驗(yàn)研究。為了獲得周向均勻。的流動(dòng)，安裝了一個(gè)大的軸對(duì)稱收集器來(lái)代替蝸殼。用熱膜探頭和壓力傳感器在葉輪出口與無(wú)葉。擴(kuò)壓器處測(cè)量非定常流動(dòng)。在葉輪出口處表現(xiàn)出明顯的噴氣尾流模式。在吸入輪轂的高流量側(cè)，輪轂與護(hù)罩的間距會(huì)隨著流量的減少而有明顯的放大。節(jié)距方向的非均勻性流動(dòng)沿著下游迅速的。降低，在半徑比為，介質(zhì)流率的非均勻性幾乎消失。當(dāng)一個(gè)經(jīng)驗(yàn)常數(shù)，用于指定表面摩擦。系數(shù)時(shí)，無(wú)葉擴(kuò)壓器的流量可以用一維分析合理地預(yù)測(cè)。以及驗(yàn)證的CFD代碼和流動(dòng)造型。離心式葉輪通常伴隨著下游擴(kuò)散器或蝸殼。速的增加而下降。Pinarbasi和Johnson測(cè)量了一個(gè)無(wú)葉擴(kuò)壓器在非設(shè)計(jì)流量條件下的三維速度場(chǎng)。流體并將此聯(lián)系到葉輪噪聲的產(chǎn)生。條件下，當(dāng)發(fā)生汽蝕時(shí)，流滑和水力損失增加。逆變器控制，并固定在300rpm。在葉輪排出處的軸對(duì)稱設(shè)計(jì)是為了提供周向均勻的水流條件。內(nèi)部的剖面圖，同時(shí)也是測(cè)量的部位。12，和14毫米)。
【正文】 Shrouded and Unshrouded Radial Flow Pump Impellers, ASME Journal of Turbomachinery, Vol. 109, pp. 70~76. [6] Inoue, M. and Cumpsty, N. A., 1984, Experimental Study of Centrifugal Impeller Discharge Flow in Vaneless and Vaned Diffusers, ASME Journal of Engineering for Gas Turbine and Power, Vol. 106, pp. 455~467. [7] Japikse, D., 1982, Advanced Diffuser Levels in Turbocharger Compressors and Component Matching, Turbocharging and Turbochargers, IMechE, C45/82, pp. 143~155. 14 [8] Japikse, D., Marscher, W. D. and Furst, R. B., 1997, Centrifugal Pump Design and Performance, Concepts ETI, Inc., pp. 310~311. [9] Johnson, . and Moore, J., 1983, The Influence of Flow Rate on the Wake in a Centrifugal Impeller, ASME Journal of Engineering for Power, Vol. 105, pp. 33~39. [10] Murakami, M., Kikuyama, K. and Asakura, E., 1980, Velocity and Pressure Distributions in the Impeller Passages of Centrifugal Pumps, ASME Journal of Fluids Engineering, Vol. 102, pp. 420 ~426. [11] Noorbakhsh, A., 1973, Theoretical and Real Slip Factor in Centrifugal Pumps, von Karman Institute for Fluid Dynamics, Technical Note 93. Pinarbasi, A. and Johnson, ., 1994, Off Design Flow Measurements in a Centrifugal Com pressor Vaneless Diffuser, ASME Paper 94 GT 42. [12] Stanitz, ., 1952, OneDimensional Compressible Flow in Vaneless Diffusers of Radial and MixedFlow Centrifugal Compressors, Including Effects of Friction, Heat Transfer and Area Change, NACA Technical Note 2610. [13] Wiesner, F. J., 1967, A Review of Slip Factors for Centrifugal Impellers, ASME Journal of Engineering for Power, Vol. 89, pp. 558~572. 附錄 施塔尼茨 (1952)開(kāi)發(fā)了一種分析一維，可壓縮流與摩擦，傳熱 和面積變化的方法，在無(wú)葉片擴(kuò)散器與任意軸向 徑向平面。當(dāng)該方法呈現(xiàn)在徑向平面平行壁無(wú)導(dǎo)葉擴(kuò)壓器的一維的、帶摩擦的不可壓縮流上時(shí)，將得到下面的方程式： 01s i n2m 2 ???? drdppbCCrCdrdCC ftm ? (2) 0c os2m ??? bCCrCCdrdCC ftmt ? (3) 011m ?? rdrdCC m (4) 式 (2)? (4)分別代表徑向平衡，切向平衡和連續(xù)性。
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