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oai:kitami-it.repo.nii.ac.jp:00007425 2026-03-09T00:44:59Z 1:86

凍結路面に散布されたビリ砂利回収用空気噴流の特性 Characteristics of Air Jet for Retrieval of Gravel Scattered on Frozen Road Surface 宮越, 勝美 宮越 勝美 羽二生, 博之 Haniu, Hiroyuki 羽二生 Haniu 博之 Hiroyuki 鈴木, 聡一郎 Suzuki, Soichiro 鈴木 Suzuki 聡一郎 Soichiro 村瀬, 真人 open access Jet Gravel Slip Prevention Nozzle Road Surface Velocity Distribution Retrieval System The development of an air jet retrieval system of the gravel scattered on the road surface for the slip prevention is studied. The purpose of this study is to clarify the optimum installation condition of the jet nozzle for blowing the gravel. The height of the nozzle exit was h=5mm, and the width was 50mm. In changing blowing angle θ of the jet and standoff distance from the road surface yo, the blow off regions of the gravel were photographed and velocity distributions over the road surface were measured by hot-wire anemometer. As the result, optimum installation condition of the jet nozzle were found to be yo/h=2～3 and θ =15°～20°,where the blow off distance of gravel is increased. application/pdf 社団法人 日本機械学会 2003 jpn journal article VoR https://kitami-it.repo.nii.ac.jp/records/7425 日本機械学会北海道支部講演会概要集 43 66 67 https://kitami-it.repo.nii.ac.jp/record/7425/files/8669732-1.pdf application/pdf 268.8 kB 2016-11-22