风扇气流模拟

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1、SwirlFromanAxialFlowFanSwirlFromanAxialFlowFan––Part2Part21.6401.435121.230StaticEfficiency1.025,kPaiency,%e080.820cRadialFlow0.615PressurAirflowtaticEffi040.410SStatic0.25000.00012345678910Airflow,m^3/sNow,we’lllookatanaxialflowfanwith“radial”flow3/18/2011CONFIDENTIAL47We’lltrackapart

2、icleofairasbefore,exceppjtnowthetrajectoryyisdifferent.AilFAxialFanHigh-PressureFlow3/18/2011CONFIDENTIAL48YZYXZYXZXAilFAxialFanHigh-PressureFlow3/18/2011CONFIDENTIAL49YYZZXYXZYXZXAilFAxialFanAsbefore,theswirlcomponentofNotetheturbulence(eddies)behindthevelocity(X-direction)graduallyHi

3、gh-PressureFlowfanandatthefantip.Thishindersdissipates,convertingkineticenergyofefficiencyandgeneratesnoise.theswirlintopgpotentialenergyy((staticpressure).Theradialcomponent(Y)alsodissipatessomewhat,convertingvelocitypressuretostaticpressure.3/18/2011CONFIDENTIAL50FlowVisualizationHiF

4、lowVisualizationHi--PressAxialFlowFanPressAxialFlowFanHorton660mmdiameterMS9inflared-outletshroud3/18/2011CONFIDENTIAL51FlowVisualizationHiFlowVisualizationHi--PressAxialFlowFanPressAxialFlowFanOperationinaxialflowarea1.6401.4351.230StaticEfficiency,%1.0250.8Airflow200.6150.410StaticEf

5、ficiencyStaticPressure,kPa0.25AxialFlow0.00012345678910Airflow,m^3/s3/18/2011CONFIDENTIAL52FlowVisualizationHiFlowVisualizationHi--PressAxialFlowFanPressAxialFlowFanOperationinradialflowarea1.6401.4351.230Static,%aEfficiencyy1.0250.820RadialFlow0.615Airflow0.410StaticEfficiencStaticPre

6、ssure,kP0.250.00012345678910Airflow,m^3/s3/18/2011CONFIDENTIAL53