基于ANSYS和FLUENT的内燃灶进排气管设计  

Design and Analysis about the Intake and Exhaust Pipe of Internal Combustion Stove

作　　者：洪吉超[1] 张铁柱[1] 张洪信[1] 舒培[1] 孙文革[1] 

机构地区：[1]青岛大学机电工程学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2013年第3期75-78,88,共5页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：青岛市科技支撑计划项目(11-2-3-62-nsh);专利项目(ZL200710016128.7)

摘　　要：针对传统燃气灶和吸油烟机存在的诸多弊端,本文基于ANSYS和FLUENT给出了内燃灶的结构原理,建立了内燃灶进排气管结构模型,并对进气管和排气管内的气体进行流场和温度场的仿真分析,仿真结果表明,在两个管内部的形状突变处和靠近进气口处,气体处于紊流状态,在管内靠近出气口处是比较稳定的层流状态。这种层流状态有利于气体流通,但不利于排气管内部高温气体与外部进行热交换,大量的热通过排气管排出室外,不利于废气余热再利用;同时,经分析,理论废气温度与实验数据存在较大的偏差,可见排气管中废气温度的变化与原理样机实验结果中废气温度的变化相吻合。该研究对废气余热利用和内燃灶功能的实现具有重要作用。Aiming at the disadvantages of the traditional gas stove and range hood, this paper gives the structure principle of internal combustion stove based on ANSYS and FLUENT. The inlet and outlet pipe structure model is established and the simulation analysis of flow field and temperature field of the gas in the inlet pipe and outlet pipe is gived. The simulation results show that in the shape mutation and the part close to the inlet of the two tube internal, gas is in the turbulent state and gas in the part near the outlet is relatively steady laminar flow state. The state of laminar flow is in favor of gas flow, but is not conducive to the exhaust pipe for heat exchange with the external of high temperature gas and a lot of heat will ex- haust to the outside through the exhaust pipe. That＇s not conducive to reuse of the waste heat in the ex- haust~ At the same time, there exists a large deviation between theory analysis and experimental data of the gas temperature, It is visible that the gas temperature change of the exhaust pipe is consistent with the change of the temperature of the exhaust gas in the experimental results of the prototype. The study will play an important role in waste heat utilization and achieving the internal combustion stove function.

关 键 词：燃气灶 内燃 分析 传热 热效率 

分 类 号：TU996.75[建筑科学—供热、供燃气、通风及空调工程]