液-固流化床換熱器分布器的研究.pdf

1、北京化工大學(xué)碩士學(xué)位論文液固流化床換熱器分布器的研究姓名：吳琳申請學(xué)位級別：碩士專業(yè)：化工過程機械指導(dǎo)教師：周昆穎20060607北京化工點學(xué)碩士學(xué)位論文THESTUDYoNTHELIQUlD—SoLIDFLUIDlZEDDISTRIBUToRoFBEDHEATEXCHANGERABSTRACTOnthebasisofinVestigationsofplentyof1iteraturesaboutthe1iquidsolidfluidi

2、zedbedheatexchanger，theimportanttaskofthispaperisonthebasisofcomputationalnuiddynamics，fromthefullgoVemingequationsofthenuidmechanism，foundedonthefinitev01umemethod(FVM)，usedthefamoussoftwareFLUENTtomakethesimulationsand

3、theoreticalworksonsomeaspectsoftheliquid—s01idnuidizedbed，the1iquid—s01idnuidizedbedheatexchangerwithsin91etubeandtheexperimentalf’acilityof1iquid—s01idnuidizedbedheatexchangerBythesimulationsoftheliquid—solidfluidizedbe

4、d，thevelocitypro行1esofparticlesandtheaxiaIdistributionsofsolidholdupsaremadeItshowsthatthenumericalresultsofthe門ow廳eldagreewellwiththeexperimentdatathroughcomparisonByanalyzingthestabilityoftheliquid—solidfluidizedbedhea

5、texchangerwithsin91etube，thefhctorswhichinnuencethestabilityarediscussedbyusingtennon—dimensionalparameters，theyarev，“，￡，n，p：，D，‘，n，尺eandP／DThesystemtendstobemorestablewithparametersv‘，￡，(andg／Dincreasedorparameters“，D，尸

6、：andF丫decreasedTheparametersnandRehavenoobViousinfluencetothestabilityofthesystemBythesimulationsoftheexperimentalfac訂ityofliquid—s01idfluidizedbedheatexchanger，thevelocityandsolidh01dupsprofllesoftheparticlesaremadewith

7、nodistributionsandthedif托rentconeanglesofthedistributortubeTheVelocityirregularityisusedtodescribethedegreeofunifbrmityofparticlesvelocitv丘eldsKEYWORDS：“quid—s01idcirculatingfluidizedbed，heatexchanger，two—phasenows，three