Optimization Of Airflow Filed And The Research About Thermal Comfort Of The Passengers In The Highway Coach

With the economic development of our contry and improvement of people’s living standard, high-grade highway network through networking and tourism market are gradually warming up. People want to a more comfortable environment to the tourist bus. Wanting to meet the needs of themarket, the bus factories are continuing to improve design and strive to raise the comfort level of product. Using of air-conditioning system is one of the main measures to improve the comfortable environment of the weather conditions.In this paper,the research object is a highway coach’s indoor airfloor field and the passengers who stay in the coach.The paper will analyze the indoor airflow field which is under air-condition working condition and want to gei a better design for the the indoor airflow field.Also,this paper will evaluate the thermal comfort of passengers in the coach.In numerical simulation,thlce dimension Physics model of the air-conditionroom is set up by GAMBIT software.Based on Reynolds-Averaged N-S Equation and standard k-ε double equation tuthulent flow model,the control equation is dispersed with finite volume method,the air distribution of flow field inside the Passenger compartment was simulated by CFD software(FLUENT),and finally the air flow rule in air-condition bus is get in this paper.In this paper, the proposed measures to optimize the use of numerical simulation to verify the results show that the improved indoor air car is more reasonable.Aboat the thermal comfort of the passengers in the bus study, in this paper for the typical passenger car interior flow field in a non-uniform thermal environment thermal comfort for passengers, respectively, using PMV-PPD and EQT two evaluation to evaluate and compare the characteristics of these two evaluation methods. By using the thermal comfort index EQT and two evaluation methods found in the theoretical basis of these two methods, focus and analysis to calculate the degree of difficulty respects its own characteristics.The analyzes of this paper not only provide the basison improving the thermal comfort of passengers in the coach, bus to reducing energy consumption of the air conditioning systems in the coach and optimizing the design of air conditioning systems and air distribution basis.And,this paper also discusses the valuation and analysis methods of passengers’thermal comfort evaluation and provides some ideas and information for further research.