PROBLEM TO BE SOLVED: To provide an analysis method of a flow on the roof capable of simply calculating flow speed distribution data of the flow on the roof of a railway vehicle passing through a tunnel using a calculator such as a personal computer without requiring specific analysis software.SOLUTION: An analysis method of a flow on a roof of a vehicle for analyzing the flow on the roof of the vehicle travelling through a tunnel includes: a model preparation step of preparing a round tubular tunnel model and a round tubular vehicle model mounted inside the tunnel model; a vehicle roof upper side analysis step of calculating a roof upper side flow speed distribution generated by a vehicle roof upper wall surface boundary layer in consideration of a surface roughness of the vehicle model: a tunnel wall surface side analysis step of calculating a tunnel wall surface side flow speed distribution generated by the tunnel wall surface boundary layer in consideration of the surface roughness of the tunnel model; and an average flow speed distribution calculation step for making the vehicle roof upper side speed distribution and the average flow speed distribution of the tunnel wall surface flow speed distribution conform with each other.SELECTED DRAWING: Figure 1

    【課題】特別な解析ソフトウェアなどを必要とせず、パーソナルコンピュータなどの計算機を用いて、簡便にトンネル内を通過する鉄道車両の屋根上流れの流速分布を計算することができる屋根上流れ解析方法を提供する。【解決手段】トンネル内を走行する車両の屋根上流れを解析する車両の屋根上流れ解析方法であって、円管状のトンネルモデルと、該トンネルモデル内に載置される円管状の車両モデルを準備するモデル準備工程と、前記車両モデルの表面粗さを考慮して車両屋根上壁面境界層による屋根上側流速分布を計算する車両屋根上側解析工程と、前記トンネルモデルの表面粗さを考慮してトンネル壁面境界層によるトンネル壁面側流速分布を計算するトンネル壁面側解析工程と、前記車両屋根上側流速分布と、前記トンネル壁面流速分布の平均流速分布を一致させる平均流速分布計算工程とを備える。【選択図】図1


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    Title :

    ANALYSIS METHOD OF FLOW ON ROOF OF VEHICLE INSIDE TUNNEL


    Additional title:

    トンネル内車両の屋根上流れ解析方法


    Contributors:

    Publication date :

    2016-12-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



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