Method for establishing noise source model of engine fan in pipeline

Method for establishing noise source model of engine fan in pipeline

The invention relates to a method for establishing a noise source model of an engine fan in a pipeline, which comprises the following steps of: extracting a theoretical basis from measured data: sound propagation of the engine fan in the pipeline is represented by a solution of a sound propagation c...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: ZHANG ZHIGANG, WANG PUYONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator ZHANG ZHIGANG
WANG PUYONG
description The invention relates to a method for establishing a noise source model of an engine fan in a pipeline, which comprises the following steps of: extracting a theoretical basis from measured data: sound propagation of the engine fan in the pipeline is represented by a solution of a sound propagation control equation which can be summed through a mode in a propagation mode form, in a cylindrical coordinate system, the control equation is effective in a flow channel, and in the cylindrical coordinate system, the control equation is effective in the flow channel; solving is carried out according to the boundary condition on the flow channel wall, and for the rigid wall surface, the boundary condition only disappears of the normal speed on the wall surface; on the theoretical basis, a control equation and a boundary condition are converted into a linear problem, and a solution of any source distribution in a flow channel in a pipeline is given through convolution between a Green function and a source function; and
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_CN114722620A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>CN114722620A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_CN114722620A3</originalsourceid><addsrcrecordid>eNqNyjEKwkAQRuFtLES9w3gAwaxiaomKjVb2YU3-TQbWmSWz3l8LD2D1-ODN3emGMmpPUSeClfBMbCPLQKJsINP31IFe2iORRoIMLKAYhFgoc0b6eulmMSTD6teFW1_Oj-a6QdYWlkMHQWmbe1Xta-8Pfnvc_fN8AJV0Mm8</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Method for establishing noise source model of engine fan in pipeline</title><source>esp@cenet</source><creator>ZHANG ZHIGANG ; WANG PUYONG</creator><creatorcontrib>ZHANG ZHIGANG ; WANG PUYONG</creatorcontrib><description>The invention relates to a method for establishing a noise source model of an engine fan in a pipeline, which comprises the following steps of: extracting a theoretical basis from measured data: sound propagation of the engine fan in the pipeline is represented by a solution of a sound propagation control equation which can be summed through a mode in a propagation mode form, in a cylindrical coordinate system, the control equation is effective in a flow channel, and in the cylindrical coordinate system, the control equation is effective in the flow channel; solving is carried out according to the boundary condition on the flow channel wall, and for the rigid wall surface, the boundary condition only disappears of the normal speed on the wall surface; on the theoretical basis, a control equation and a boundary condition are converted into a linear problem, and a solution of any source distribution in a flow channel in a pipeline is given through convolution between a Green function and a source function; and</description><language>chi ; eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2022</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20220708&amp;DB=EPODOC&amp;CC=CN&amp;NR=114722620A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20220708&amp;DB=EPODOC&amp;CC=CN&amp;NR=114722620A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHANG ZHIGANG</creatorcontrib><creatorcontrib>WANG PUYONG</creatorcontrib><title>Method for establishing noise source model of engine fan in pipeline</title><description>The invention relates to a method for establishing a noise source model of an engine fan in a pipeline, which comprises the following steps of: extracting a theoretical basis from measured data: sound propagation of the engine fan in the pipeline is represented by a solution of a sound propagation control equation which can be summed through a mode in a propagation mode form, in a cylindrical coordinate system, the control equation is effective in a flow channel, and in the cylindrical coordinate system, the control equation is effective in the flow channel; solving is carried out according to the boundary condition on the flow channel wall, and for the rigid wall surface, the boundary condition only disappears of the normal speed on the wall surface; on the theoretical basis, a control equation and a boundary condition are converted into a linear problem, and a solution of any source distribution in a flow channel in a pipeline is given through convolution between a Green function and a source function; and</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2022</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyjEKwkAQRuFtLES9w3gAwaxiaomKjVb2YU3-TQbWmSWz3l8LD2D1-ODN3emGMmpPUSeClfBMbCPLQKJsINP31IFe2iORRoIMLKAYhFgoc0b6eulmMSTD6teFW1_Oj-a6QdYWlkMHQWmbe1Xta-8Pfnvc_fN8AJV0Mm8</recordid><startdate>20220708</startdate><enddate>20220708</enddate><creator>ZHANG ZHIGANG</creator><creator>WANG PUYONG</creator><scope>EVB</scope></search><sort><creationdate>20220708</creationdate><title>Method for establishing noise source model of engine fan in pipeline</title><author>ZHANG ZHIGANG ; WANG PUYONG</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN114722620A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2022</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>ZHANG ZHIGANG</creatorcontrib><creatorcontrib>WANG PUYONG</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHANG ZHIGANG</au><au>WANG PUYONG</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for establishing noise source model of engine fan in pipeline</title><date>2022-07-08</date><risdate>2022</risdate><abstract>The invention relates to a method for establishing a noise source model of an engine fan in a pipeline, which comprises the following steps of: extracting a theoretical basis from measured data: sound propagation of the engine fan in the pipeline is represented by a solution of a sound propagation control equation which can be summed through a mode in a propagation mode form, in a cylindrical coordinate system, the control equation is effective in a flow channel, and in the cylindrical coordinate system, the control equation is effective in the flow channel; solving is carried out according to the boundary condition on the flow channel wall, and for the rigid wall surface, the boundary condition only disappears of the normal speed on the wall surface; on the theoretical basis, a control equation and a boundary condition are converted into a linear problem, and a solution of any source distribution in a flow channel in a pipeline is given through convolution between a Green function and a source function; and</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language chi ; eng
recordid cdi_epo_espacenet_CN114722620A
source esp@cenet
subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Method for establishing noise source model of engine fan in pipeline
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-04T14%3A10%3A55IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=ZHANG%20ZHIGANG&rft.date=2022-07-08&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ECN114722620A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true