强迫风冷散热器计算工具

功耗参数,,散热器参数,,空气参数,,风机参数,,,层流/紊流选择,空气参数,,,,,

Q[W],6200,散热器宽度W[mm],521,环温[℃],40,进出风口空气△t,10,,需进行规划求解,全管长平均温度Tf℃,40,45,50,55,60

,,散热器长度L[mm],300,全管长平均温度Tf,45,计算风量[m3/min.],45.94,,需输入参数,气压100kpa,1.013,1.013,1.013,1.013,1.013

,,散热器高度H[mm],78,气压100kpa,1.013,计算风量[CFM],1623,,,空气密度ρkg/m3,1.128,1.110,1.093,1.076,1.060

,,翅片高度Hf[mm],63,空气密度ρkg/m3,1.128,风机风量[m3/min.],46.38,,,比热容J/(kg.k),1005,1005,1005,1005,1005

,,Hb[mm],15,比热容J/(kg.k),1005,风机风量[CFM],1638,,,运动粘度m2/sν*10^6,16.96,17.46,17.95,18.46,18.97

,,Wf[mm],1,运动粘度m2/sν*10^6,16.96,风机静压[Inch.H2O],4.02,,,普朗特数Pr,0.699,0.699,0.698,0.697,0.696

,,Ws[mm],3,普朗特数Pr,0.699,风机风量q1[m3/min.],46.38,,,导热系数W/m.℃λ*10^2,2.76,2.80,2.83,2.87,2.9

,,Nf,131,导热系数W/m.℃λ*10^2,2.76,风机静压P1[Pa],0,,,膨胀系数℃-1β*10^6,3.19,3.15,3.1,3.05,3

,,导热系数W/m.℃λ,208,膨胀系数℃-1β*10^6,3.19,风机风量q2[m3/min.],42,,,动力黏度Pa.sμ*10^6,19.1,19.4,19.6,19.9,20.1

,,de[m],0.0057,动力黏度Pa.sμ*10^6,19.1,风机静压P2[Pa],120,,,,,,,,

tw2,75,导热侧面积A1[m^2],0.16,,,风机静压[Pa],1001,,,,,,,,

Re,10624,对流换热面积A2[m^2],5.11,,,风机风速[m/s],31.5,,,,,,,,

工作Re,4633,翅间面积A2[m^2],0.12,,,风机风量[m3/s],0.773,,,,,,,,

层流-努谢尔特数Nu,7.4,翅片面积A2[m^2],4.99,,,P-Q后半段斜率bp=b*q+c,-27.4,,,,,,,,

紊流-努谢尔特数Nu,17.1,通风面积A0[m^2],0.02,,,P-Q后半段常数cp=b*q+c,1270.7,,,,,,,,

过渡流-努谢尔特数Nu,14.4,截面积A1[m^2],0.04,,,0=a*q^2-b*q-c,0.0,,,,,,,,

努谢尔特数Nu,14.4,通风面积比Ka,0.60,,,风机工作风量[m3/min.],20.23,,,,,,,,

换热系数h[W/m2.K],69.6,粗糙度K[m],0.0000015,,,风机工作风量[CFM],714,,,,,,,,

m,25.9,收缩局部压损系数Kc,0.20,,,风机工作风量[m3/s],0.337,,,,,,,,

翅片效率ηf,0.57,扩大局部压损系数Ke,0.16,,,风机工作静压[Inch.H2O],2.88,,,,,,,,

总效率η,0.58,层流-沿程阻力系数f,0.006,,,风机工作静压[Pa],717,,,,,,,,

总热阻R[K/W],0.005,紊流-沿程阻力系数f,0.031,紊流Re3000~1000000,,风机工作风速[m/s],13.7,,,,,,,,

导热热阻R1[K/W],0.000,紊流-沿程阻力系数f,0.015,紊流Re>1000000,,,,,,,,,,,

对流热阻R2[K/W],0.005,紊流-沿程阻力系数f,0.031,紊流柯尔布鲁克公式,,,,,,,,,,,

△t[℃],33.1,,6.0071E-08,规格求解等式结果=0,,,,,,,,,,,

△t1[℃],2.9,,2.046984423,≥0.005,,,,,,,,,,,

△t2[℃],30.2,沿程阻力系数f,0.031,,,,,,,,,,,,

基板温度tw1[℃],78,系统压降系数a,1.75,,,,,,,,,,,,

肋壁温度tw2[