{"data":{"id":"10.6084/m9.figshare.4596850.v1","type":"dois","attributes":{"doi":"10.6084/m9.figshare.4596850.v1","prefix":"10.6084","suffix":"m9.figshare.4596850.v1","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Ohnewein, Philip","nameType":"Personal","givenName":"Philip","familyName":"Ohnewein","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Pressure loss coefficients for T-pieces at low Reynolds numbers"}],"publisher":"figshare","container":{},"publicationYear":2017,"subjects":[{"subject":"91305 Energy Generation, Conversion and Storage Engineering","subjectScheme":"FOR"},{"subject":"FOS: Mechanical engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Mechanical engineering","subjectScheme":"Fields of Science and Technology (FOS)"}],"contributors":[],"dates":[{"date":"2017-01-31","dateType":"Created"},{"date":"2017-01-31","dateType":"Updated"},{"date":"2017","dateType":"Issued"}],"language":null,"types":{"ris":"DATA","bibtex":"misc","citeproc":"dataset","schemaOrg":"Dataset","resourceType":"Dataset","resourceTypeGeneral":"Dataset"},"relatedIdentifiers":[{"relationType":"IsIdenticalTo","relatedIdentifier":"10.6084/m9.figshare.4596850","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["5032166 Bytes"],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"Overview\u003cbr\u003e--------------------------------------------\u003cbr\u003eThis Matlab toolbox contains 4 Matlab functions that serve to calculate pressure loss coefficients (zeta values) for 4 different cases (one function for each case). The pressure loss coefficients are relevant for T-pieces (junctions) of round pipes, and are especially interesting for low Reynolds numbers where hardly any reliable information can be found in literature (as of 2015). \u003cbr\u003eQuestions, remarks or other input is welcome. Please contact Philip Ohnewein, AEE INTEC (www.aee-intec.at), email p.ohnewein@aee.at\u003cbr\u003eThis is a Matlab toolbox - other toolboxes (e.g. Java or Python) are available on request. \u003cbr\u003e\u003cbr\u003e\u003cbr\u003eLicensing \u0026amp; Citing\u003cbr\u003e--------------------------------------------\u003cbr\u003eThis toolbox may be used under the Creative Commons Attribution-ShareAlike 4.0 International Public License (see file _license.txt). \u003cbr\u003eFor more information: https://creativecommons.org/licenses/by-sa/4.0/\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eHow to use the toolbox?\u003cbr\u003e--------------------------------------------\u003cbr\u003eFlow in T-pieces can be combining of dividing. And pressure loss coefficient are calculated for both pipes that meet in the T-piece. A total of four different cases. \u003cbr\u003eThis toolbox contains one MATLAB function for each of these 4 cases: \u003cbr\u003e- getComZetas.m com = combining flow, s = side pipe\u003cbr\u003e- getComZetast.m com = combining flow, st = straight pipe\u003cbr\u003e- getDivZetas.m div = dividing flow, s = side pipe\u003cbr\u003e- getDivZetast.m div = dividing flow, st = straight pipe\u003cbr\u003e\u003cbr\u003eThe toolbox was created in Matlab 2016a, but should run on older version of Matlab as well (tested on Matlab 2014b). No further MATLAB packages are required to run the functions. \u003cbr\u003eTo use the functions, you need not navigate to the containing folder because it is automatically added to the Matlab path. \u003cbr\u003e\u003cbr\u003e\u003cbr\u003eInputs \u0026amp; Outputs\u003cbr\u003e--------------------------------------------\u003cbr\u003eAll 4 functions require the same inputs. Currently, all functions only work with scalar inputs. \u003cbr\u003e Re_c [-] Reynolds number\u003cbr\u003e QsQc [-] Ratio of side to common pipe cross section area\u003cbr\u003e pdp [mm] Penetration depth = how deep the side pipe protrudes \u003cbr\u003e Di_S [mm] Inner diameter of common pipe\u003cbr\u003e Di_A [mm] Inner diameter of side pipe\u003cbr\u003eOutputs:\u003cbr\u003e success [boolean]\u003cbr\u003e errMsg [string]\u003cbr\u003e zetaVal [numeric scalar]\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eConcept\u003cbr\u003e--------------------------------------------\u003cbr\u003eThe pressure loss coefficients (zeta values) calculated by the above functions are based on empirical measurements in the laboratory of AEE INTEC (www.aee-intec.at) from 2011 until 2014 within the research project \"ParaSol\" (Hydraulikdesign von parallelen Kollektormodulen in solarthermischen Großanlagen). The zeta values can be calculated for a wide range of boundary conditions (Reynolds number etc., see inputs section above). All results are for T-pieces with an angle of 90° between the pipes. \u003cbr\u003e\u003cbr\u003eDetails about the experimental setup, evaluation, validation and neural-network-modelling of the original pressure loss data can be found in the final report of the ParaSol project which comes packaged with this toolbox. \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"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