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| 1 | Numerical and Experimental Modelling of Gas Flow and Heat Transfer in the Air Gap of an Electric Machine显示文摘This work deals with the cooling of high-speed electric machines, such as motors and generators, through an air gap. It consists of numerical and experimental modeling of gas flow and heat transfer in an annular channel. Velocity and temperature profiles are modeled in the air gap of a high-speed test machine. Friction and heat transfer coefficients are presented in a large velocity range. The goals are reached acceptably using numerical and experimental research. The velocity field by the numerical method does not match in every respect the estimated flow mode. The absence of secondary Taylor vortices is evident when using time averaged numerical simulation. | Maunu KUOSA Petri SALLINEN Jaakko LARJOLA | 2004 | Journal of Thermal Science2004，13，3： | 16 |
| 2 | Numerical and Experimental Modelling of Gas Flow and Heat Transfer in the Air Gap of an Electric Machine. Part II: Grooved Surfaces显示文摘The study deals with the cooling of a high-speed electric machine through an air gap with numerical and experimental methods. The rotation speed of the test machine is between 5000-4000 r/rain and the machine is cooled by a forced gas flow through the air gap. In the previous part of the research the friction coefficient was measured for smooth and grooved stator cases with a smooth rotor. The heat transfer coefficient was recently calculated by a numerical method and measured for a smooth stator-rotor combination. In this report the cases with axial groove slots at the stator and/or rotor surfaces are studied. Numerical flow simulations and measurements have been done for the test machine dimensions at a large velocity range. At constant mass flow rate the heat transfer coefficients by the numerical method attain bigger values with groove slots on the stator or rotor surfaces. The results by the numerical method have been confirmed with measurements. The RdF-sensor was glued to the stator and rotor surfaces to measure the heat flux through the surface, as well as the temperature. | Maunu KUOSA Petri SALLINEN Arttu REUNANEN Jari BACKMAN Jaakko LARJOLA Lasse KOSKELAINEN | 2005 | Journal of Thermal Science2005，14，1： | 4 |
| 3 | Fluid dynamic modeling of a free piston engine with labyrinth seals显示文摘Preliminary design and simulation of a free piston engine suitable for small-scale energy production in distributed energy systems is presented in this paper.The properties,particularly the properties of gas seals of the engine are simulated using a simulation program developed for this case,and the results are utilized in preliminary main design parameter selection.The engine simulation program was developed by combining and modifying the source codes of the simulation and calculation programs obtained from Helsinki University of Technology,Tampere University of Technology,and Lappeenranta University of Technology.Because of the contact-free labyrinth seal used in the piston,the efficiency of the motor is lower than the efficiency of a conventional motor with oil lubricated piston rings.On the other hand,the lack of bearing losses,and the lack of losses associated with a crankshaft system and a gearbox,as well as the lack of lubrication oil expenses,compensates this effect.As a net result,this new motor would perform slightly better than the conventional one.Being completely oil-free,it is very environmentally friendly,and its exhaust gases are completely free of oil residuals which are causing problems in normal gas motors. | Jaakko Larjola Juha Honkatukia Petri Sallinen Jari Backman | 2010 | Journal of Thermal Science2010，19，2： | 4 |
| 4 | Computational and Experimental Study of an Industrial Centrifugal Compressor Volute显示文摘A centrifugal compressor with a vaneless diffuser was studied experimentally and numerically. The main target of the study was to analyze the volute flow. Two different volute geometries was studied. The numerical solution was done by using a steady-state RANS code at both design and off-design conditions. Both calculated and measured pressure and velocity distributions are presented. | Harri Pitkanen Haunu Esa Arttu Reunanen Petri Sallinen Jaakko Larjola | 2000 | Journal of Thermal Science2000，9，1： | 3 |
| 5 | Genetic aberrations in sporadic and neuro fibromatosis 2 (NF2)-associated schwanno- mas studied by comparative genomic hybridization(CGH)显示文摘 | Antinheimo J Sallinen SL Sallinen P | 2000 | Acta Neurochir(Wien)2000，142，10： | 1 |
| 6 | Peripheral and central sex steroids have differential effects on the HPA axis of male and female rats显示文摘 | Mccormick C Linkroum W Sallinen B | 2002 | Stress2002，5，4： | 1 |
| 7 | Laparoscopic versus open adhesiolysis for small bowel obstruction-a multicenter,prospective,randomized,controlled trial显示文摘 | Sallinen V Wikstrm H Victorzon M | 2014 | BMC Surg2014，14，： | 1 |
| 8 | Work related factors,sleep debt and insomnia in IT professionals显示文摘 | Kivisto M Harma M Sallinen M | 2008 | Occup Med (Lond)2008，58，2： | 1 |
| 9 | Genetic aberrations in sporadic and neurofibromatosis 2(NF2)-associated schwannomas studied by comparative genomic hybridization (CGH)显示文摘 | Antinheimo J Sallinen SL Sallinen P | 2000 | Acta Neu- rochir(Wien)2000，142，10： | 1 |
| 10 | A Real-Time Microprocessor QRS Detector System with a 1-ms Timing Accuracy for the Measurement of Ambulatory HRV显示文摘 | Antti Ruha Sami Sallinen Seppo Nissila | 1997 | IEEE Transactions on Biology and Medical Engineering1997，44，3： | 1 |
| 11 | Sleep, memory, and learning显示文摘 | SALLINEN M | 2013 | Duodeeim2013，129，21： | 1 |
| 12 | Prolonged sleep restriction affects glucose metabolism in healthy young men显示文摘 | van Leeuwen W M Hublin C Sallinen M | 2010 | Int J Endocrinol2010，2010，10： | 1 |
| 13 | Expression of insulin-receptor substrate-1 and-2 in ovaries from women with insulin resistance and from controls 显示文摘 | Wu X Sallinen K Anttila L | 2000 | FertilSteri2000，74，3： | 1 |
| 14 | Expression of insulin - receptor substrate - 1 and - 2 in ovariaes from women with PCOS and from controls 显示文摘 | Wu XK Sallinen K Anttila L | 2000 | Fertil Steril2000，74，3： | 1 |
| 15 | Genetic aberra tions in sporadic and neurofibromatosis 2 (NF2)associated schwannomas studied by comparatine genornic hybridization 显示文摘 | Antinheimo J Sallinen SL Sallinen P | 2000 | Acta Neurochir2000，142，10： | 1 |
| 16 | Cyclic expression of mRNA transcripts for connective tissue components in the mouse ovary显示文摘 | Oksjoki S Sallinen S Vuorio E | 1999 | Mol Hum Reprod1999，5，9： | 1 |
| 17 | Preoperative angiopoietin-2 serum levels : a marker of malignant potential in ovarian neoplasms and poor prognosis in epithelial ovarian cancer显示文摘 | Sallinen H Heikura T Laidinen S | 2010 | Int J Gynecol Cancer2010，20，9： | 1 |
| 18 | Selective ovaryan resistance to insulin signaling in women with polycystic ovary syndrome 显示文摘 | Wu X K Zhou S Y Sallinen K | 2003 | Fertil Steril2003，80，4： | 1 |
| 19 | Sleep,memory and learning显示文摘 | Sallinen M | | 0，，21： | 1 |
| 20 | Preoperative Angiopoietin-2 Serum Levels: A Marker of Malignant Potential in Ovarian Neoplasms and Poor Prognosis in Epithelial Ovarian Cancer显示文摘 | Hanna Sallinen Tommi Heikura Svetlana Laidinen Veli-Matti Kosma Seppo Heinonen Seppo Yl?-Herttuala Maarit Anttila | 2010 | International Journal of Gynecological Cancer2010，，9： | 1 |
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