高大厂房热风供暖流场温度场数值模拟

东北大学硕士学位论文AbstractThe Temperature and Flow Field Simulation of HotAir Heating for a Tall BuildingAbstractHot air heating is a new heating system.It is heat medium.Firstly,it heats air.Then thehot air will be sent into the room.Hot air temperature is higher than indoor temperature andhot air mixes with indoor air.Hot air compensates for the heat loss of the room by its energy,maintaining required indoor temperature so as to achieve the purpose of heatingThe paper simulates the flow field and temperature field of hot air heating tall buildingAnd then it analyses the simulation results.The design of the hot wind heating system has aguiding significance.This article uses the CFD method.It uses computational fluid dynamics softwareANSYS-FLUENT to simulate the flow field and temperature field of hot air heating tallbuilding,and gets specific temperature and velocity distribution in the factory.Through thesimulation results of the analysis,it proofs the feasibility of the hot air heating application intall space building.In this paper,the hot air heating factory of unilateral return air is simulated.When thebuilding body temperature arrives at 5C,10C,15C,18C and 20C,the temperature andvelocity distribution in the entire factory was analyzed respectively.It finds out thenonuniform temperature area of the factory.It gets each required time when temperature tomeet the requirements of values.It puts forward that the best heating time is 504s when thedistance between air ports and ground is 0.5m.At the same time,the factory heatingtemperature is up to 10C and the temperature and velocity gradient value is very small.Theheating effect is the best.Through the analysis of different conditions,when air ports height changes from 0.5m to4m,it can get the best effect of air heating when air ports height is 4m.Key words:hot air heating;tall building;numerical simulation;temperature field;flow fieldΠ