A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
POROUS BODY, HONEYCOMB FILTER, AND METHOD FOR PRODUCING POROUS BODY
PROBLEM TO BE SOLVED: To provide a porous body improved in trapping capability, and to provide a honeycomb filter.SOLUTION: A porous body has a flow-rate-weighted mean diameter Ru of 10 μm or more and 24 μm or less, which is obtained as follows: with reference to porous body data obtained by a CT scan in which positional information is associated with voxel-type information, a plurality of virtual curved surface solids, which are each a curved surface solid made up of a plurality of virtual spheres, are placed to fill space voxels with curved surface voxels that are occupied by the virtual curved surface solids (Step S100); fluid analysis is carried out based on the porous body data to obtain information on the flow rates of a fluid in individual space voxels during passing of the fluid through the porous body (Step S110); and, on the basis of information on the virtual curved surface solids and information on the flow rates of a fluid in individual space voxels, the flow-rate-weighted mean diameter Ru is obtained, which is a weighted mean obtained by weighting the equivalent diameter R'of each virtual curved surface solid with the volume Vand average flow rate Uof each virtual curved surface solid (Step S120).
【課題】捕集性能をより高めた多孔質体及びハニカムフィルタを提供する【解決手段】多孔質体は、ＣＴスキャンにより位置情報と画素種別情報とが対応づけられた多孔質体データを参照して、複数の仮想球体が組み合わされた曲面体である仮想曲面体を、仮想曲面体によって占有される曲面体画素で空間画素を埋めるように複数配置し（ステップＳ１００）、多孔質体データに基づいて流体解析を行うことにより多孔質体内部を流体が通過する際の空間画素毎の流速に関する情報を導出し（ステップＳ１１０）、仮想曲面体に関する情報と空間画素毎の流速に関する情報とに基づいて、仮想曲面体毎の等価直径Ｒ’iを仮想曲面体毎の体積Ｖi及び平均流速Ｕiで重み付けした加重平均である流速加重平均径Ｒｕを導出したときに（ステップＳ１２０）、流速加重平均径Ｒｕが１０μｍ以上２４μｍ以下である。【選択図】図６
POROUS BODY, HONEYCOMB FILTER, AND METHOD FOR PRODUCING POROUS BODY
PROBLEM TO BE SOLVED: To provide a porous body improved in trapping capability, and to provide a honeycomb filter.SOLUTION: A porous body has a flow-rate-weighted mean diameter Ru of 10 μm or more and 24 μm or less, which is obtained as follows: with reference to porous body data obtained by a CT scan in which positional information is associated with voxel-type information, a plurality of virtual curved surface solids, which are each a curved surface solid made up of a plurality of virtual spheres, are placed to fill space voxels with curved surface voxels that are occupied by the virtual curved surface solids (Step S100); fluid analysis is carried out based on the porous body data to obtain information on the flow rates of a fluid in individual space voxels during passing of the fluid through the porous body (Step S110); and, on the basis of information on the virtual curved surface solids and information on the flow rates of a fluid in individual space voxels, the flow-rate-weighted mean diameter Ru is obtained, which is a weighted mean obtained by weighting the equivalent diameter R'of each virtual curved surface solid with the volume Vand average flow rate Uof each virtual curved surface solid (Step S120).
【課題】捕集性能をより高めた多孔質体及びハニカムフィルタを提供する【解決手段】多孔質体は、ＣＴスキャンにより位置情報と画素種別情報とが対応づけられた多孔質体データを参照して、複数の仮想球体が組み合わされた曲面体である仮想曲面体を、仮想曲面体によって占有される曲面体画素で空間画素を埋めるように複数配置し（ステップＳ１００）、多孔質体データに基づいて流体解析を行うことにより多孔質体内部を流体が通過する際の空間画素毎の流速に関する情報を導出し（ステップＳ１１０）、仮想曲面体に関する情報と空間画素毎の流速に関する情報とに基づいて、仮想曲面体毎の等価直径Ｒ’iを仮想曲面体毎の体積Ｖi及び平均流速Ｕiで重み付けした加重平均である流速加重平均径Ｒｕを導出したときに（ステップＳ１２０）、流速加重平均径Ｒｕが１０μｍ以上２４μｍ以下である。【選択図】図６
POROUS BODY, HONEYCOMB FILTER, AND METHOD FOR PRODUCING POROUS BODY
多孔質体，ハニカムフィルタ及び多孔質体の製造方法
SAKASHITA TAKASHI (author) / NAGAOKA HIROYUKI (author) / SHIMODA TAKEHIDE (author)
2015-11-05
Patent
Electronic Resource
Japanese
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