Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
POROUS BODY, HONEYCOMB FILTER, METHOD FOR PRODUCING POROUS BODY, AND METHOD FOR PRODUCING HONEYCOMB FILTER
PROBLEM TO BE SOLVED: To sufficiently reduce porosity of a porous body and to sufficiently improve permeability thereof.SOLUTION: A porous body constituting a porous partition wall 44 of a honeycomb filter 30 has a porosity P of 20% to 60% and a permeability k of 1 μmor more and satisfies k≥0.2823 P-10.404. The porous body is obtained by a producing method, for example comprising the steps of (a) acquiring porous body data representing a temporary porous body having porosity higher than target porosity, (b) deriving information on a flow rate for each space voxel during passage of a fluid through inside of the porous body by conducting fluid analysis based on the porous body data, (c) preferentially replacing the voxel having a low flow rate among the space voxels in the porous body data with an object voxel on the basis of the information on the flow rate, and adjusting the porosity of the porous body data to the target porosity, and (d) forming a porous body based on the porous body data after the replacement.
【課題】多孔質体の気孔率を十分小さくし且つ透過性を十分高くする。【解決手段】ハニカムフィルタ３０の多孔質隔壁４４を構成する多孔質体の気孔率Ｐが２０％〜６０％、透過率ｋが１μｍ2以上、且つｋ≧０．２８２３Ｐ−１０．４０４。このような多孔質体は、例えば、（ａ）目標気孔率よりも気孔率が大きい仮多孔質体を表す多孔質体データを取得する工程と、（ｂ）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ボクセル毎の流速に関する情報を導出する工程と、（ｃ）流速に関する情報に基づいて、多孔質体データにおける空間ボクセルのうち流速の低いボクセルを優先的に物体ボクセルに置換して、多孔質体データの気孔率を前記目標気孔率にする工程と、（ｄ）置換後の多孔質体データに基づく多孔質体を形成する工程と、を含む製造方法により得ることができる。【選択図】図２
POROUS BODY, HONEYCOMB FILTER, METHOD FOR PRODUCING POROUS BODY, AND METHOD FOR PRODUCING HONEYCOMB FILTER
PROBLEM TO BE SOLVED: To sufficiently reduce porosity of a porous body and to sufficiently improve permeability thereof.SOLUTION: A porous body constituting a porous partition wall 44 of a honeycomb filter 30 has a porosity P of 20% to 60% and a permeability k of 1 μmor more and satisfies k≥0.2823 P-10.404. The porous body is obtained by a producing method, for example comprising the steps of (a) acquiring porous body data representing a temporary porous body having porosity higher than target porosity, (b) deriving information on a flow rate for each space voxel during passage of a fluid through inside of the porous body by conducting fluid analysis based on the porous body data, (c) preferentially replacing the voxel having a low flow rate among the space voxels in the porous body data with an object voxel on the basis of the information on the flow rate, and adjusting the porosity of the porous body data to the target porosity, and (d) forming a porous body based on the porous body data after the replacement.
【課題】多孔質体の気孔率を十分小さくし且つ透過性を十分高くする。【解決手段】ハニカムフィルタ３０の多孔質隔壁４４を構成する多孔質体の気孔率Ｐが２０％〜６０％、透過率ｋが１μｍ2以上、且つｋ≧０．２８２３Ｐ−１０．４０４。このような多孔質体は、例えば、（ａ）目標気孔率よりも気孔率が大きい仮多孔質体を表す多孔質体データを取得する工程と、（ｂ）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ボクセル毎の流速に関する情報を導出する工程と、（ｃ）流速に関する情報に基づいて、多孔質体データにおける空間ボクセルのうち流速の低いボクセルを優先的に物体ボクセルに置換して、多孔質体データの気孔率を前記目標気孔率にする工程と、（ｄ）置換後の多孔質体データに基づく多孔質体を形成する工程と、を含む製造方法により得ることができる。【選択図】図２
POROUS BODY, HONEYCOMB FILTER, METHOD FOR PRODUCING POROUS BODY, AND METHOD FOR PRODUCING HONEYCOMB FILTER
多孔質体、ハニカムフィルタ、多孔質体の製造方法、及びハニカムフィルタの製造方法
SAKASHITA TAKASHI (Autor:in) / NAGAOKA HIROYUKI (Autor:in)
02.11.2015
Patent
Elektronische Ressource
Japanisch
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