| Modern commercial buildings have different kinds of forms and strange shapes,in recent years there are several new modern commercial buildings with indoor canal as a water landscape.Relying on the traditional design experience it’s difficult to meet all requirements,so the help of computer simulations is needed for design prediction.This article uses Shijiazhuang Jinzheng·Hyde Park Plaza Venice Water Street to establish a numerical model for the study,it was simulated using CFD technology to research the temperature,humidity and velocity field under different winter and summer conditions of the air supply,and the simulation results are evaluated and analyzed in order to provide a reference for future project design.First,according to the fact of architectural form,we built the physical and mathematical model of the commercial building,and in order to test and verify the validity of the model,test was conducted in Jinzheng·Hyde Park Plaza Venice Water Street in winter operating conditions,the air-conditioned air dry and wet bulb temperature,air flow volume,the canal water temperature and indoor selected points’ relative humidity,air temperature and wind speed are measured.We also simulated under the test weather conditions and verified the correctness of the model by comparing the measured data and simulation results,and analyze the simulation results of commercial building’s inside thermal environment under the test conditions.Secondly,FLUENT software was used on numerical simulation study of bar air blower program airflow in different winter and summer conditions,Water Street’s thermal environment under different air parameters are analyzed and compared,the results showed that in the person active area inside,the temperature and air velocity are evenly distributed,and will change when the air supply parameters change.The relative humidity distributes unevenly,and the relative humidity is higher than designed,people have more uncomfortable feelings.Finally,by analyze the results of the simulation results of test conditions,winter and summer conditions,we identify the shortcomings of the current airflow organization,and improve it by increasing the number of air supply outlet and changing the position of the air supply outlet.In accordance with the improved arrangement of the air supply outlet,re-establish the physical model,select two typical conditions in summer and winter to conduct CFD numerical simulation.Compare and analyze the simulation results of the improved and the original program of the same kinds of conditions from the temperature field and humidity field and velocity field.Considering average summer temperature from 26.10°C reduce to 25.90°C and winter temperature from 22.06°C to 21.80°C,the summer average relative humidity from 64.2% to 58.6% and winter average relative humidity from 49.1% to 44.6%,in the person active area.The improve program has obvious effectiveness that can provide design guidance for future similar types of buildings. |
