| |
|
|
|
|
|
|
|
|
1. |
Record Nr. |
UNINA9910139913303321 |
|
|
Autore |
Melamed Leo |
|
|
Titolo |
For crying out loud [[electronic resource] ] : from open outcry to the electronic screen / / Leo Melamed |
|
|
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Hoboken, N.J., : John Wiley & Sons, 2009 |
|
|
|
|
|
|
|
ISBN |
|
1-119-19771-6 |
1-282-36929-6 |
9786612369292 |
0-470-53080-4 |
|
|
|
|
|
|
|
|
Descrizione fisica |
|
1 online resource (370 p.) |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
|
|
Soggetti |
|
Commodity exchanges - Illinois - Chicago - History |
Electronic books. |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Note generali |
|
Description based upon print version of record. |
|
|
|
|
|
|
Nota di bibliografia |
|
Includes bibliographical references and index. |
|
|
|
|
|
|
Nota di contenuto |
|
For Crying Out Loud: From Open Outcry to the Electronic Screen; Contents; Foreword; Preface; Acknowledgments; Author's Note; Part I: Battling the Tyranny of the Status Quo; Part II: Messenger from the Futures; Part III: Appendixes; Notes; About the Author; Index |
|
|
|
|
|
|
|
|
Sommario/riassunto |
|
In Praise of For Crying Out Loud ""Endowed with strong parents and a bit of luck, Leo Melamed has made a remarkable escape from Nazi occupied Poland to building one of the pinnacles of global finance. Over four decades and more, he was the leading force in bringing his beloved 'Merc' from obscure trading pits for butter and eggs, and pork bellies to a model of electronic efficiency, handling billions of financial contracts, almost instantaneously with certainty of execution. Leo's pride in the Merc's safeguards against risk are justified by its sustained market performance in t |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. |
Record Nr. |
UNINA9910824138903321 |
|
|
Autore |
Hashmi Amir A. |
|
|
Titolo |
Oil film dynamics in aero engine bearing chambers : fundamental investigations and numerical modelling / / von Amir Aleem Hashmi |
|
|
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Berlin : , : Logos, , [2012] |
|
©2012 |
|
|
|
|
|
|
|
|
|
ISBN |
|
|
|
|
|
|
Descrizione fisica |
|
1 online resource (164 pages) |
|
|
|
|
|
|
Collana |
|
Forschungsberichte Aus Dem Institut Für Thermische Strömungsmaschinen ; ; Band 20 |
|
|
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
Soggetti |
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Note generali |
|
PublicationDate: 20121115 |
|
|
|
|
|
|
Sommario/riassunto |
|
Long description: Aero engine bearing chambers are complex machine elements inside the engines, supporting up to three concentric shafts on bearings. For safety reasons, the aero engines always employ rolling-element type bearings and therefore require a sufficient oil supply for lubrication in order to guarantee a reliable operation. As a consequence, a complex two-phase flow consisting of oil and sealing air governs the bearing chambers. A highly dynamic oil film, flowing along the chamber walls, plays a vital role to fulfill the tasks of cooling, lubricating and cleaning the bearing chambers. The design and optimization process of the bearing chambers requires a detailed understanding in order to accurately simulate the film behaviour inside the bearing chambers. Based on the earlier experimental investigations, it is known that near the scavenge off-take a relatively thick film exists. The numerical model to simulate these films must therefore take into account the elliptical behaviour of such films. Among the different models, the Volume Of Fluid (VOF) Model offers the best compromise between accuracy and efforts. However, preliminary attempts to model a fully developed and turbulent test case from literature revealed an unphysical pressure drop and velocity profile in the gas phase above the film flow. An inadequate turbulence modelling near the gas-liquid interface was identified as the problem source. The 2-Equation |
|
|
|
|
|
|
|
|
|
|
turbulence models (k-ε& k-Ï) were extended to achieve a substantial improvement. |
|
|
|
|
|
| |