Investigation of the total thermal resistance of children’s bedding systems at various air temperatures and velocities using CFD analysis  

作　　者：Qin Zhou Qing Zheng Ying Ke 

机构地区：[1]School of Textile Science and Engineering,Jiangnan University,Wuxi,214122,China [2]School of Digital Technology and Innovation Design,Jiangnan University,Wuxi,214122,China

出　　处：《Building Simulation》2025年第2期371-383,共13页建筑模拟(英文)

基　　金：supported by the National Natural Science Foundation of China(NSFC)(No.51506076).

摘　　要：The total thermal resistance of bedding systems can be affected by environmental variables.A computational fluid dynamics(CFD)model of child manikin and duvet bedding system was developed to investigate the effects of air temperature(T_(air),5–25°C)and air velocity(V_(air),0.2–1.0 m/s)on the total thermal resistance(R_(t))of children’s bedding systems composed of duvet with different total filling weights(w,350–1000 g)in three sleep postures(P1,P2,and P3).Heat flux experiments were conducted to validate the CFD model.Results from the simulations indicated that a 1℃rise in T_(air)led to a reduction in R_(t)by 0.09–0.11 clo.Furthermore,R_(t)decreases with the increase in V_(air),and the reduction in R_(t)slows down as V_(air)increases.Variations in T_(air)and V_(air)had the most significant impact on R_(t)in the P2 sleep position and the least effect in the P3 sleep position.Based on the simulation results,a prediction equation for the R_(t)of the children’s bedding systems was established.These research findings offer valuable insights into the scientific selection and design of children’s bedding systems,which are crucial for improving children’s sleep quality.

关 键 词：CFD simulation air temperature air velocity sleeping position bedding system total thermal resistance 

分 类 号：TS941.1[轻工技术与工程—服装设计与工程] TS941.17