LPガスの流動拡散に関する基礎的研究
スポンサーリンク
概要
- 論文の詳細を見る
Experimental studies were made of the diffusing behavior of LPG (liquified petroleum gas) on its leakage into the flowing air over the flat ground. A small wind tunnel with a cross section of 40×40 cm2 and 3.6 m in length was used. Its wind velocity was variable from 0 to 3 m/sec.As a sample gas, carbon-dioxide was employed instead of propane for the sake of experimental safety, while they were similar in molecular weight and, accordingly, in specific gravity.The sample gas was let to leak out onto the floor of the wind tunnel through a rubber tube, 10 mm in diameter, and the concentrations at points in the leeward layer were measured by means of an interference gas detector and a recording type infrared gas-analyzer.The rate of leakage was varied from 3 to 18 1/min, and the wind velocity from 0.13 to 2.0m/sec. Summarized are the results and conclusions as follows :1. The ejected gas was observed to diffuse in a form of creeping layer over the floor, leeward from the leakage point. The gas concentration close to the floor-surface decreased exponentially with the distance from the leakage point.2. The width of the downwind gas-layer decreased rapidly with the increase of wind velocity, provided the rate of leakage was kept constant, while the thickness of the layer showed a slight increase as the wind velocity increased.3. Contours of the gas concentration are as illustrated in Fig. 16, 17. The manner in which the rate of leakage and the wind velocity affected the pattern of gas-concentration distribution was examined.
- 日本火災学会の論文
日本火災学会 | 論文
- 横風の影響を受けた火災プリュームトラジェクトリーのモデル化
- 横風の影響を受けた火災プリューム幅に関する実験的研究
- トンネル火災時の火炎傾斜について : 火炎が天井に接炎しない場合
- 第4回火災爆発危険セミナーに参加して
- 第5回アジア-オセアニア火災科学シンポジウムに参加して