01162nam 2200361 n 450 99638516560331620221107222737.0(CKB)1000000000604498(EEBO)2248512809(UnM)99845135(EXLCZ)99100000000060449819910919d1534 uy |engurbn||||a|bb|Exonoratorium curatoru[m][electronic resource][Prynted at London At Temple barre, by Thomas Godfray[1534?]][36] p. ; 8voBy John Peckham, whose name appears in the caption title on A1r.Imprint from colophon; publication date conjectured by STC.Signatures: A-C⁶.Reproduction of the original in the Cambridge University Library.eebo-0021Spiritual lifeMiddle Ages, 600-1500Spiritual lifePeckham Johnd. 1292.184438Cu-RivESCu-RivESCStRLINWaOLNBOOK996385165603316Exonoratorium curatoru2331442UNISA03736nam 2200397 450 991081710340332120230222162230.03-8325-9493-0(CKB)4340000000244330(MiAaPQ)EBC524707958a1c693-38a8-4191-b414-3edeb0dd2d03(EXLCZ)99434000000024433020180509d2015 uy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierOil droplet impact dynamics in aero-engine bearing chambers correlations derived from direct numerical simulations /Davide PedutoBerlin : Logos Verlag, 2015 :Logos Verlag,2015.1 online resource (181 pages)Forschungsberichte aus dem Institut für Thermische StrömungsmaschinenPublicationDate: 201506303-8325-4001-6 Long description: Bearing Chambers in Aero-Engines are located near the rolling-element type of bearings which support the shafts and accommodate the resulting thrust loads. One of the main task of the bearing chambers is, beside an efficient scavenging of the lubricating oil, the cooling of the hot compartments. A very complex two-phase air-oil flow takes usually place in these bearing chambers consisting of oil droplet-laden air flows and shear-driven liquid wall films. The interaction of the droplets with the wall films is significantly influencing the wall heat transfer and the cooling performance of these systems. For this reason, a detailed characterization and modelling of the mass and momentum exchange between droplets and wall films for the unique impingement parameter range in bearing chambers is inevitable. This scientific report investigates the oil droplet impact dynamics for typical impingement regimes relevant to aero-engine bearing chambers. The application of a Direct Numerical Simulation (DNS) technique based on the Volume-of-Fluid (VOF) method and coupled with a gradient-based adaptive mesh refinement (AMR) technique allowed to characterize the drop impact dynamics during various single micro- and millimeter drop impacts onto thin and thick films. With the help of a special numerical treatment, a self-perturbing mechanism is installed that leads to the correct resolution of the crown disintegration process. The numerical methodology was thoroughly validated using the experimental results of millimeter sized drop impacts onto deep liquid pools. These results were developed with an enhanced back-illuminated high-speed imaging and Particle Tracking Velocimetry (PTV) technique. New insights into the cavity penetration, the crown's breakup dynamics and the secondary droplet characteristics following a single drop impact have been developed with the help of the isolated variation of different parameters of influence. Particularly the influence of the Froude number, the impingement angle, and the cavity-wall interaction delivered results to date not reported in scientific literature. Beside the advances in fundamental physics describing the drop impact dynamics with the help of the numerical and experimental results, a set of correlations could also be derived. From these correlations, a drop-film interaction model was formulated that is suitable for the parameter range found in bearing chambers.Lubricating oilsLubricating oils.629.255Peduto Davide1639992MiAaPQMiAaPQMiAaPQBOOK9910817103403321Oil droplet impact dynamics in aero-engine bearing chambers3983335UNINA04666nam 22008534a 450 991096453280332120250911224128.09786613008121978128300812912830081229780231511353023151135310.7312/rupp13930(CKB)1000000000474447(EBL)908470(OCoLC)818856013(SSID)ssj0000163832(PQKBManifestationID)12008975(PQKBTitleCode)TC0000163832(PQKBWorkID)10117553(PQKB)11693372(MiAaPQ)EBC908470(DE-B1597)459288(OCoLC)746580111(OCoLC)979739512(DE-B1597)9780231511353(Au-PeEL)EBL908470(CaPaEBR)ebr10183572(CaONFJC)MIL300812(Perlego)775354(EXLCZ)99100000000047444720060328d2006 uy 0engur|n|---|||||txtccrGlobalization challenged conviction, conflict, community /George RuppNew York Columbia University Pressc20061 online resource (129 p.)University seminars/Leonard Hastings Schoff memorial lecturesDescription based upon print version of record.9780231139311 0231139314 9780231139304 0231139306 Includes bibliographical references and index.Conviction in an age of globalization -- Local conflict, global migration -- Globalization and the challenge of inclusive community -- Jagdish Bhagwati : arguing for pluralism -- Jeremy Waldron, secularism and the limits of community -- Wayne Proudfoot : religious convictions and global justice -- Another look at conflict, community, and conviction.In Globalization Challenged, George Rupp, president of the International Rescue Committee, outlines the steps necessary to engage the contemporary conflict between traditional religious belief and Western secularism. According to Rupp, the key objective is to build a community that is inclusive without denying the validity of particular commitments. While he acknowledges the threat of "resurgent fundamentalism," Rupp also criticizes secularists who fail to recognize or acknowledge the role of religion and its ideological equivalents in influencing public policy. All views, he asserts, are subject to comparative appraisal. The challenge is to develop ways to evaluate different approaches responsibly, leading to a greater understanding of one's own convictions as well as the positions of others.Rupp reinforces his critical and theoretical analysis with dramatic accounts of recent events in Afghanistan, the Democratic Republic of Congo, and Sudan-places where the International Rescue Committee operates. He then addresses the role of globalization in fueling instability worldwide. Inadequately regulated privatization has compromised health care, education, and social programs in many countries, whereas an inclusive community would encourage a more equitable distribution of resources.Essays by Jagdish Bhagwati, Jeremy Waldron, and Wayne Proudfoot expand Rupp's arguments, and in a final chapter Rupp responds to the issues they raise. Essential reading for anyone who hopes to understand the roots of today's geopolitical tensions, Globalization Challenged asks that we shed our complacency, recognize the legitimate role of conviction, and take actions to shape a more just and inclusive society.University seminars/Leonard Hastings Schoff memorial lectures.Cultural pluralismGlobalizationSocial aspectsGlobalizationReligious aspectsSocial conflictCommunitiesGemeinschaft and Gesellschaft (Sociology)Cultural pluralism.GlobalizationSocial aspects.GlobalizationReligious aspects.Social conflict.Communities.Gemeinschaft and Gesellschaft (Sociology)305.8009/0511Rupp George1614259Bhagwati Jagdish N.1934-120915Proudfoot Wayne1939-284739Waldron Jeremy263108MiAaPQMiAaPQMiAaPQBOOK9910964532803321Globalization challenged4433842UNINA