凹凸煙管傳熱與阻力性能計算報告書

凹凸煙管傳熱與阻力性能計算報告書目的獲得凹凸管的傳熱與阻力性能特征，并比較同等條件下光管的傳熱與阻力特性，對凹凸管的性能有一個量的認識，具體需要獲得以下數(shù)據(jù)：放熱系數(shù)（或努謝爾特數(shù)）、沿程阻力系數(shù)（或壓差）方法采用CFD/NHT技術（計算流體力學及傳熱學）建立對象的流體力學和傳熱學微分方程，并對其進行數(shù)值化求解。計算對象描述計算對象（凹凸管）是具有上下、左右對稱的粗糙管，其具體結構如下圖所示。圖0－1凹凸管整體結構示意圖因其對稱性，故可取其1/4作為計算對象，其網(wǎng)格劃分如下。圖0－2單節(jié)距1/4凹凸管示意圖計算過程為與光管性能進行比較，計算在充分發(fā)展條件下進行，并分別在給定速度范圍內（5－25m/s）選取若干個速度點進行計算，流動介質為爐膛煙氣。計算結果圖0－2為500℃時的速度分布示意圖，其入口平均流速為15m/s，圖0－3為凹凸管最大截面及最小截面處中心線上的速度分布圖0－3凹凸管中心及兩端截面速度分布云圖圖0－4凹凸管最大截面和最小截面處水平及垂直中心線上速度分布（1/4大?。┮韵率怯嬎闼玫?組數(shù)據(jù)，分別為300℃、400℃、500℃、600℃、700℃、800℃、900℃及1000℃時的結果。(一)、300度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)54584.150.24520.031790.4551954.146.9570.213267.56876.230.4450.02560.4140666.1857.43143.70635109168.30.65240.021150.3774273.3663.66232.8707112.511460.380.89880.018650.3546780.1369.53341.921851513752.461.14240.016460.3393684.9973.75471.1207417.516044.531.41620.014990.3283386.6575.19620.402662018336.611.77340.014370.3181394.0881.64785.1453822.520628.682.18440.013980.3127999.2986.16977.026682522920.762.680340.01390.30825106.9892.831188.6714續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.08720.0538125.0621.758.3892.158627.672841.378750.16860.0462932.7528.4216.07322.020768.114141.274920.27250.0420540.0734.7725.7321.830898.14161.154270.39540.0390646.9740.7637.0221.705848.235491.072720.53930.03753.0044651.1171.603268.319251.005970.710.0357959.61851.7367.921.453518.321930.911940.89980.0347166.8355884.91.407598.312240.883361.12120.0340974.39564.56108.41.334578.322440.837311.35850.0335581.0970.37131.781.319178.332870.82742(2)、數(shù)據(jù)處理圖1－1兩種管子的努謝爾特數(shù)圖1－2兩種管子的努謝爾特數(shù)之比圖1－3兩種管子的阻力系數(shù)圖1－4兩種管子的阻力系數(shù)之比圖1－5凹凸煙管的綜合性能評價(二)、400度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)53477.920.24090.03670.4480855.1440.6358.817.55216.880.43270.02930.4080166.4648.97120.49106955.840.660.025140.3724476.8856.65195.5312.58694.80.8990.021920.3512484.15962.01288.131510433.751.17290.019860.3341190.0866.37394.6717.512172.711.4260.017740.3163594.62169.72508.632013911.671.728130.016460.3112399.9373.63653.5922.515650.632.0450.015390.30697105.377.59815.882517389.592.40070.014660.29892111.45282.12980.83續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.083580.0606723.9517.658.3072.301957.385871.482680.161530.052130.8522.7316.2392.154447.831971.369880.26070.0472937.3727.5426.2762.056957.876331.306270.38210.0443843.7332.2338.4611.924047.91431.220570.52410.0422449.9936.8352.5781.802197.910211.14340.68540.0405755.9641.2368.6471.691027.797341.076270.86210.039161.5345.3486.3611.624017.96091.028911.05280.0377166.749.15105.7721.578638.139470.995291.2530.0363871.44652.644126.1851.559968.216380.98149(2)、數(shù)據(jù)處理圖2－1兩種管子的努謝爾特數(shù)圖2－2兩種管子的努謝爾特數(shù)之比圖2－3兩種管子的阻力系數(shù)圖2－4兩種管子的阻力系數(shù)之比圖2－5凹凸煙管的綜合性能評價(三)、500度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)52757.760.23470.041090.3775956.7136.3143.147.54136.640.41970.032650.363167.5143.2293.34105515.520.64880.028390.3515877.3749.54160.6712.56894.40.91750.02570.3315388.0756.39236.73158273.281.20830.02350.3222696.4661.76331.3617.59652.161.49420.021350.31215102.8765.86436.882011031.031.80110.019710.30654106.6568.28560.3622.512409.912.07460.017930.3011110.7970.93696.612513788.792.35810.016510.29189113.1672.45833.7續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.080610.0671924.7715.867.82.289415.619741.565980.15120.05631.3720.0814.532.152396.483971.426650.24060.0501437.7724.1822.952.04887.011481.334820.34660.0462343.7528.0132.932.013217.474381.293310.46920.0434649.6731.844.281.942147.862211.233840.6080.0413855.3735.4557.171.857837.993291.1760.75990.0395960.8838.9871.091.751678.157371.103850.9220.0379566.8342.7983.821.657638.047471.047711.10510.0368571.3745.69699.651.585487.826421.00827(2)、數(shù)據(jù)處理圖3－1兩種管子的努謝爾特數(shù)圖3－2兩種管子的努謝爾特數(shù)之比圖3－3兩種管子的阻力系數(shù)圖3－4兩種管子的阻力系數(shù)之比圖3－5凹凸煙管的綜合性能評價(四)、600度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)52244.0630.20440.04770.3968456.15831.78840.187.53366.090.4060.020050.3542466.21837.48280.7104488.130.6260.03090.3471977.38743.804140.6112.55610.160.87610.027690.3372486.87749.176213.41156732.191.16260.025520.3309596.35554.54301.5817.57854.221.47650.023810.32994105.26159.582409.23208976.251.76150.021750.32338110.00162.265523.8822.510098.282.02690.019770.31916113.25964.11654.382511220.322.33730.018470.30933115.0365.114782.98續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.041220.0387710.696.054.265.2542110.235363.149820.14650.0612431.45217.80314.0032.105385.784611.430970.23080.0542937.16721.03722.172.082246.395521.384320.32750.0492944.24725.04529.121.963516.842561.286130.44630.0466448.42227.40942.471.989867.095451.293020.56660.043555.38531.3549.651.900547.584021.217030.71680.0421459.3733.60566.81.852857.674361.18340.86840.0403365.23436.92577.751.736227.913091.101461.05980.0398868.18838.597101.421.687027.757151.07495(2)、數(shù)據(jù)處理圖4－1兩種管子的努謝爾特數(shù)圖4－2兩種管子的努謝爾特數(shù)之比圖4－3兩種管子的阻力系數(shù)圖4－4兩種管子的阻力系數(shù)之比圖4－5凹凸煙管的綜合性能評價(五)、700度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)51872.970.1930.042540.3633149.725.2432.977.52809.460.41050.04020.3533568.9134.9972.15103745.950.60680.033430.3483777.1239.17126.4612.54682.430.84860.029920.3425586.9844.17194.29155618.921.11910.02740.3370295.748.6275.2617.56555.411.41620.025480.33384104.1552.89371.13207491.91.73410.023890.32694112.8757.32474.7122.58428.382.01920.021970.32347118.0259.94594.44259364.862.31630.020420.3226119.7160.8731.9續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.04770.0500512.266.225.114.057887.25922.623630.14250.0664831.5816.0413.572.181425.315461.51050.22220.0582936.8718.7221.292.092415.977021.411960.31770.0533342.2821.4730.472.057296.422811.366460.41990.0489549.2224.99536.531.944396.884621.271890.54950.0470852.726.7752.261.975727.091561.283990.67210.0440959.4830.2158.251.897387.41591.221010.82130.0425763.3632.1873.951.862657.598331.192261.00820.0423265.0333.03100.591.840757.623061.17741(2)、數(shù)據(jù)處理圖5－1兩種管子的努謝爾特數(shù)圖5－2兩種管子的努謝爾特數(shù)之比圖5－3兩種管子的阻力系數(shù)圖5－4兩種管子的阻力系數(shù)之比圖5－5凹凸煙管的綜合性能評價(六)、800度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)51596.770.2260.037650.5542657.8226.5445.72627.52395.160.40980.030490.4853171.7932.9590.085103193.550.62130.026090.4395682.6637.94145.056212.53991.940.86050.023130.4106991.9942.23211.76154790.321.13310.021020.40038101.6646.66297.2817.55588.711.44440.019810.38069111.7251.28384.73206387.11.73050.017890.37558120.8655.48495.7622.57185.482.05770.016990.35945124.2957.05600.5257983.872.37970.015880.35685129.86559.61736續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.075930.0876714.516.668.253.984986.322082.656060.13980.0717631.6914.5513.422.264616.762731.487190.21680.0625737.4517.1946220.482.20657.0251.436950.30720.0567142.319.4214229.2352.17447.241321.406630.4310.0552948.0622.0660441.242.114567.241961.367890.54450.0512955.0425.2708147.192.029227.422831.305580.64290.0463860.5727.8098355.441.994988.097631.259210.79550.0453564.8929.7932975.891.914867.926461.214340.98170.0453367.9831.2120297.691.909847.872481.21298(2)、數(shù)據(jù)處理圖6－1兩種管子的努謝爾特數(shù)圖6－2兩種管子的努謝爾特數(shù)之比圖6－3兩種管子的阻力系數(shù)圖6－4兩種管子的阻力系數(shù)之比圖6－5凹凸煙管的綜合性能評價(七)、900度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)51377.050.16450.043710.3493749.8820.9526.297.52065.570.40270.047570.5097772.3330.3886.31102754.10.61480.040850.4621983.6835.15139.1212.53442.620.84990.036140.4286393.139.1201.59154131.151.11480.032920.4145102.0842.87280.7217.54819.671.41980.03080.39806111.4846.82366.94205508.21.73160.028760.38478121.2150.91463.2822.56196.722.05340.026950.39301130.654.85598.88256885.252.43510.025890.37379134.7356.59703.2續(xù)表壁面剪切應力(光管)(Pa)阻力系數(shù)(光管)放熱系數(shù)(光管)（w/m2k）努謝爾特數(shù)(光管)單位管長壓降(Pa/m)放熱系數(shù)之比阻力系數(shù)之比綜合性能評價0.041010.051914.055.9013.773.550256.730962.33390.079560.0447514.816.22028.514.8840911.390852.859840.21130.0668637.7515.85519.732.216976.913141.448870.29940.0606242.1917.719828.672.206577.070881.434940.39310.0552948.5820.403634.442.10117.497411.348860.51060.0527653.6222.520448.812.0797.544531.332830.61790.0488658.524.5751.832.072047.87571.315870.75670.0472965.0927.337869.392.006388.311481.259170.91790.0464769.329.10691.631.944278.044351.22899(2)、數(shù)據(jù)處理圖7－1兩種管子的努謝爾特數(shù)圖7－2兩種管子的努謝爾特數(shù)之比圖7－3兩種管子的阻力系數(shù)圖7－4兩種管子的阻力系數(shù)之比圖7－5凹凸煙管的綜合性能評價(八)、1000度計算結果(1)、原始數(shù)據(jù)速度（m/s）雷諾數(shù)壁面剪切應力(凹凸管)(Pa)摩擦阻力系數(shù)(凹凸管)阻力系數(shù)(凹凸管)放熱系數(shù)(凹凸管)（w/m2k）努謝爾特數(shù)(凹凸管)單位管長壓降(凹凸管)(Pa/m)51193.180.18010.05260.41651.0119.6628.67.51789.770.