对流给热系数的测定

q'ᵥ/m3·s-1 0.0055 0.0051 0.0047 0.0044 0.0041 0.0039 0.0036 0.0033 0.003 0.0025 0.0019 0.0016 t2-t1/°C .05 63.75 .1 .2 .1 .25 63.95 63.75 63.35 61.9 61.75 66.55 [(T1-t2)-(T2-t1)]/ln[(T1-t2)/(T2-t1)] 35.9851 36.9188 36.8007 36.2367 36.1576 36.6330 36.4632 37.0125 37.1346 37.8653 38.7456 39.2552 -2-1h1/W·m·K 84.7702 77.979 73.1258 69.2083 .8362 62.14 57.8613 52.1071 48.0225 41.0136 31.1425 27.3427 λ 0.029442 0.029419 0.029446 0.0294 0.029446 0.029457 0.029434 0.029419 0.029388 0.029275 0.0292 0.029635

Nu 46.06771 42.41055 39.73442 37.59588 35.2301 33.75175 31.45255 28.33956 26.1456 22.41535 17.02722 14.76217 v 0.109475 0.101513 0.093551 0.08758 0.081608 0.077627 0.071656 0.065685 0.059713 0.049761 0.037818 0.031847 2.025E-05 2.02752E-05 2.02918E-05 2.02966E-05 2.02918E-05 2.029E-05 2.02847E-05 2.02752E-05 2.02562E-05 2.01874E-05 2.01802E-05 2.04079E-05 1.0444 1.0453 1.0442 1.0439 1.0442 1.0438 1.0447 1.0453 1.0466 1.0513 1.0518 1.0558 Re 90.16326 83.73672 77.02484 72.0708 67.19188 63.86735 59.04671 .18258 49.337 41.46268 31.53776 26.36169 pᵥ 0.693958 0.694019 0.693948 0.693928 0.693948 0.693917 0.693978 0.694019 0.6941 0.694395 0.694426 0.693453