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kingloverqui
Wysłany: Sob 16:00, 25 Gru 2010
Temat postu: buy cheap ugg boots 8
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Experimental study of the downstream elbow space Rectifier
~ 21) m. / H compared with rectifiers and no rectifier. Experimental conditions (3) L / D a 10, d / D a 32.5/50, T = 26 ℃,
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, body = 0.38MPa, Q = (10 ~ 21) m. / H compared with rectifiers and no rectifier. Stack 1 Zheng Jianguang, et al: Experimental study of space elbow downstream rectifier 59O. 0'O. o. O. 0.5l0-o_5 1 split burst a grasshopper. . Explosive O Reynolds R-◆ - have rectifier - Port Bu - no rectifier Figure 5 (port ~ Re) curve _ mouth. -,. . :::. 6l0.33 ¨ Y11702.5 ¨ 3139 Single: j, D + a rectifier - Port Bu - no rectifier Figure 6 (TGf - Gfo% ~ feet) curve. {I {j】 stupid one. Top of eight critical Reynolds number for a shuttlecock Re-◆ - have rectifier - Port Bu - no rectifier Figure 7 (population ~ Re) curve '*. . - ■, ■ ■ ■. . . _. A. ~ ... ... A ~-''',\College of Health 2000 31 l Lo stupid o.s1Il50 Xiu results and analysis are rectifier Reynolds number Re + - sister of a free converter in Figure 10 (% ft) curve (1) a ~ Re the curve in Figure 5,7, 9, can be seen: a rectifier measured when the throttle orifice flow coefficient than when measured without rectifier throttle orifice flow coefficient of a stable and smaller fluctuations. With the increasing value of Reynolds number Re , a measured orifice flow coefficient tends to a constant value. without the rectifier, the measured flow orifice flow coefficient points in some random some transition, this may be the stability of the device when no rectifier orifice discharge coefficient measured on the larger. (2)% ~ Re the curve in Figure 6,8,10, a rectifier can be seen when measured orifice flow coefficient than one percent population deviation No rectifier stable and small fluctuations. With the Reynolds number Re increases, the deviation of the measured orifice flow coefficient tends to constant value. there is no rectifier rectifier and the orifice discharge coefficient when the deviation of the measured value ( a 1 to 1.5) between. in a short straight pipe before the conditions, the use of rectifiers to improve the conditions of use orifice flowmeter. 【Reference】 1-13 Kawada bath Lang. Flow Measurement Manual [M] . Beijing: China Metrology Press, 1982. [23 Shandong Institute of Technology. Engineering Fluid Mechanics [M]. Beijing: China Water Power Press, 1984. [33 of porous plate rectifier. Japan: Japan Association of Mechanical Engineers 52,
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, 77, Showa 61. [43 Chan Hak city. hydrodynamics experimental technology [M]. Hangzhou: Zhejiang University Press, 1986.StudiesontherectifieratthelowerreachofaspaceelbowZHENGJian-guang, XUESheng-hu,
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, JIALing (Dept.ofMeasuningandContralEngineering, ChinaInstituteofMetrology,
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, Hangzhou310034, China) Abstract: Theflowcoefficientsoftheorifice -plateflowmetersareexperimentallystudiedwithorwithoutarectifieratthelowerreachofaspaceelbowinthemeasuringpipeofflow.Theresultsshowthattheflowcoefficientsoftheorifice-plateswitharectifieraremorestableandhavelessfluctuationthanthosewithoutarectifier.Therectifiercallim-provetheflowingpropertiesinthepipeandactasalongstraighttube.Keyword: space-elbow; rectifier; orifice-platecoefficientofflow
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