Ｕｎｄｅｒｃｏｎｓｔａｎｔｗａｌｌ ｔｅｍｐ ｅｒａｔｕｒｅｃｏｎｄｉ

Ｕｎｄｅｒｃｏｎｓｔａｎｔｗａｌｌ ｔｅｍｐ ｅｒａｔｕｒｅｃｏｎｄｉｔｉｏｎ， ｔｈｅｆｌｏｗａｎｄｈｅａｔｔｒａｎｓｆｅｒｏｆｔｈｅ
ｆｌｕｉｄｉｎｓｉｄｅｔｈｅｔｕｂｅａｒｅｓｉｍｕｌａｔｅｄ，Ａｎｄｔｈｒｏｕ ｇ ｈｔｈｅｃｏｍｐ ｒｅｈｅｎｓｉｖｅｐ ｅｒｆｏｒｍａｎｃｅｅｖａｌｕａ －
ｔｉｏｎｆａｃｔｏｒ， ｔｈｅｅｎｈａｎｃｅｄｈｅａｔｔｒａｎｓｆｅｒｐ ｅｒｆｏｒｍａｎｃｅｏｆｔｈｅｈｅｌｉｃａｌｐ ｉ ｐ ｅｗｉｔｈｄｉｆｆｅｒｅｎｔｇ ｅｏ －
ｍｅｔｒｉｃａｌｐ ａｒａｍｅｔｅｒｓ ｉｓｃｏｍｐ ａｒｅｄ．Ｉｔ ｉｓｏｂｔａｉｎｅｄｔｈａｔｔｈｅｖｅｌｏｃｉｔ ｙｆｉｅｌｄａｎｄｔｅｍｐ ｅｒａｔｕｒｅｆｉｅｌｄ
ｄｉｓｔｒｉｂｕｔｉｏｎｏｆｔｈｅｆｌｕｉｄｉｎｄｉｆｆｅｒｅｎｔｓｅｃｔｉｏｎｏｆｔｈｅｓ ｐ ｉｒａｌｐ ｉ ｐ ｅａｌｏｎ ｇｔｈｅａｘｉａｌｄｉｒｅｃｔｉｏｎ．
Ａｎｄｔｈｅｃｈａｎ ｇ ｅｃｕｒｖｅｓｏｆｔｈｅｈｅｌｉｃａｌｄｉａｍｅｔｅｒ， ｐ ｉｔｃｈ， ｄｉａｍｅｔｅｒｏｆｔｈｅｐ ｉ ｐ ｅａｎｄｏｔｈｅｒｐ ａｒａｍ－
ｅｔｅｒｓｏｆｔｈｅｓ ｐ ｉｒａｌｐ ｉ ｐ ｅ．Ｔｈｅｒｅｓｕｌｔｓｓｈｏｗｔｈａｔ：ｗｉｔｈｔｈｅｉｎｃｒｅａｓｅｏｆｔｈｅａｎ ｇ ｌｅ， ｔｈｅｔｗｏ
ｆｌｏｗｉｓｅｎｈａｎｃｅｄ， ａｎｄｔｈｅｍａｘｉｍｕｍｓ ｐ ｅｅｄｏｆｖｅｒｔｉｃａｌａｘｉａｌｓｅｃｔｉｏｎｇ ｒａｄｕａｌｌ ｙｍｏｖｅｔｏｔｈｅ
ｏｕｔｓｉｄｅｏｆｔｈｅｔｕｂｅ，Ａｔｔｈｅｓａｍｅｔｉｍｅ， Ｕｎｄｅｒｔｈｅｃｏｍｍｏｎａｃｔｉｏｎｏｆｔｈｅｔｈｅｒｍａｌｂｏｕｎｄａｒ ｙ
ｌａ ｙ ｅｒａｎｄｔｈｅｔｗｏｆｌｏｗ， ｔｈｅｈｅａｔｉｓｔｒａｎｓｆｅｒｒｅｄｆｒｏｍｔｈｅｉｎｎｅｒｂｏｕｎｄａｒ ｙｌａ ｙ ｅｒｔｏｔｈｅｃｏｒｅ
ｒｅ ｇ ｉｏｎｏｆｔｈｅｆｌｕｉｄ， ａｎｄｔｈｅｔｅｍｐ ｅｒａｔｕｒｅｉｓｄｉｓｔｒｉｂｕｔｅｄｉｎｔｏｔｈｅｃｏｎｃａｖｅａｒｃｓｈａ ｐ ｅ．Ｗｉｔｈｔｈｅ
ｅｎｈａｎｃｅｍｅｎｔｏｆｈｅａｔｔｒａｎｓｆｅｒｐ ａｒａｍｅｔｅｒｓｏｆｓ ｐ ｉｒａｌｔｕｂｅｃｈａｎ ｇ ｅｓｈａｖｅｄｉｆｆｅｒｅｎｔｖａｒｉａｔｉｏｎ，
Ｃｏｍｐ ａｒｅｄｗｉｔｈｄｉａｍｅｔｅｒｐ ｉ ｐ ｅｄｉａｍｅｔｅｒ，ｔｈｅｉｎｆｌｕｅｎｃｅｏｆｐ ｉｔｃｈｏｎｈｅａｔｔｒａｎｓｆｅｒｉｓｎｅ ｇ ｌｉ －
ｇ ｉｂｌｅ， ａｎｄｔｈｅｐ ｉ ｐ ｅｄｉａｍｅｔｅｒｉｓｐ ｒｅｆｅｒｒｅｄｉｎｔｈｅｓｅｌｅｃｔｉｏｎｏｆｈｅｌｉｃａｌｔｕｂｅ

結果 (中文) 1:

Underconstantwall 临时 eraturecondition theflowandheattransferoftheAndthrou g hthecomp rehensivep erformanceevalua-fluidinsidethetubearesimulatedtionfactor，theenhancedheattransferp erformanceofthehelicalp 我 p ewithdifferentg 环氧乙烷-metricalp 参数 iscomp ared.It isobtainedthatthevelocit yfieldandtemp eraturefielddistributionofthefluidindifferentsectionofthes p iralp 我 p ealon gtheaxialdirection。Andthechan g ecurvesofthehelicaldiameter，p 痒痒的 diameterofthep 我 p eandotherp 兰-etersofthes p iralp p 我 e.Theresultsshowthat:withtheincreaseofthean g，这两个andthemaximums p eedofverticalaxialsectiong raduall ymovetothe flowisenhancedoutsideofthetube，Atthesametime，Underthecommonactionofthethermalboundar 和和 erandthetwoflow，theheatistransferredfromtheinnerboundar，和 ertothecore重 ionofthefluid，andthetemp eratureisdistributedintotheconcavearcsha p e.Withthe genhancementofheattransferp arametersofs p iraltubechan g eshavedifferentvariationComp aredwithdiameterp 我 p ediameter，theinfluenceofp itchonheattransferisne g 李-g 负责、 andthep 我 p ediameterisp referredintheselectionofhelicaltube

結果 (中文) 3:

underconstantwall温度eraturecondition，theflowandheattransferofthefluidinsidethetubearesimulated，andthrou G hthecomp rehensivep erformanceevalua－tionfactor，theenhancedheattransferp erformanceofthehelicalp I P ewithdifferentg EO－metricalp参数iscomp ARED。它isobtainedthatthevelocit yfieldandtemp eraturefielddistributionofthefluidindifferentsectionofthes P iralp I P益能gtheaxialdirection。Andthechan g ecurvesofthehelicaldiameter，P痒，diameterofthep I P eandotherp阿兰姆－etersofthes P iralp I P E研究表明：withtheincreaseofthean克勒，两flowisenhanced，andthemaximums P eedofverticalaxialsectiong raduall ymovetotheoutsideofthetube，与此同时，Underthecommonactionofthethermalboundar yerandthetwoflow LA Y，Y ertothecore theheatistransferredfromtheinnerboundar YLA重新G ionofthefluid，andthetemp eratureisdistributedintotheconcavearcsha P E和enhancementofheattransferp arametersofs P iraltubechan G eshavedifferentvariation，公司aredwithdiameterp I P ediameter，theinfluenceofp itchonheattransferisne G李－G公司，andthep I P ediameterisp referredintheselectionofhelicaltube