地下風道における熱環境予測に関する数値解析

Translated title of the contribution: Prediction Analysis of Air Temperature and Humidity in Underground Airways

Xiaoming Zhang, Kyuro Sasaki, Hiroshi Miyakoshi, Yoshiaki Mizuta

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes fundamental studies on numerical prediction system related to air temperature and humidity of underground airways and shafts that are in dry and wet conditions.
The mathematical model including angle of inclined airways, heat and mass transfer at rock surface of airway and phase change of water vapor to fog is presented. The quasi three dimensional finite difference model was used for numerical calculations of rock temperature. The wetness was used to express the degree of wet condition of the rock surface.
The prediction calculations about the variations of air flow temperature and humidity along the dry and wet airways have been carried out. The air flow temperature of inlet side is affected by the wet condition and inclined angle of airway. The air temperature in the exhaust shaft has tendency to be kept a constant temperature by the latent heat released by the phase change of water vapor. The amount of fog in airflow of the exhaust shaft is presented.
Finally, the practical equations (33) and (37) to predict air temperature of the dry airways and shafts are presented on the basis of results by the finite difference calculations.
Translated title of the contributionPrediction Analysis of Air Temperature and Humidity in Underground Airways
Original languageJapanese
Pages (from-to)653-660
Number of pages8
JournalShigen to sozai
Volume110
Issue number8
DOIs
Publication statusPublished - Aug 1994

All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Modelling and Simulation
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Prediction Analysis of Air Temperature and Humidity in Underground Airways'. Together they form a unique fingerprint.

Cite this