منابع مشابه
An Experiment study concerning Natural convection frome a Horizontal Thin wire
An experimental investigation was carried out to determine heat transfer coefficients for natural convection from a heated horizontal wire. The heating is provided by electrical current, and the temperature of the wire is determined from the measurement of its resistance. The experiments are performed in three different convective environments: air, water, and oil. Prandtl number ranged between...
متن کاملHot-wire anemometry for superfluid turbulent coflows.
We report the first evidence of an enhancement of the heat transfer from a heated wire to an external turbulent coflow of superfluid helium. We used a standard Pt-Rh hot-wire anemometer and overheat it up to 21 K in a pressurized liquid helium turbulent round jet at temperatures between 1.9 K and 2.12 K. The null-velocity response of the sensor can be satisfactorily modeled by the counterflow m...
متن کاملHot topics from Belle experiment
We present the first evidence of the decay B → τ−ν̄τ , using 414 fb −1 of data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We detect the signal with a significance of 4.0 standard deviations including systematics, and measure the branching fraction to be B(B−...
متن کاملProduction of Equal Sized Atomic Clusters by a Hot Wire
A resistively heated metal wire is shown to be a source of charged atomic clusters consisting of only a few atoms. They are size classified with a differential mobility analyzer, and their relative abundance is determined as a function of size. AgnK + clusters are obtained from wires containing silver with traces of potassium to provide the electric charge. First principles calculations reveal ...
متن کاملاندازه گیری تحریک لایه مرزی در تونل باد به کمک hot wire
در این پایان نامه به مطالعه رفتار جریان آشفته روی صفحه تخت،که لایه مرزی مغشوش آن با قرار دادن مانع ذوزنقه ای و مربعی تحریک شده با استفاده از دستگاه جریان سنج سیم داغ پرداخته شده است. همچنین اثر تحریک لایه مرزی بر سرعت متوسط و شدت اغتشاشات در پشت مانع ذوزنقه ای و مربعی درفواصل مختلف مانع ازصفحه و در ایستگاه های مختلف بررسی شده است. نتایج بدست آمده نشان می دهد هرچه فاصله مانع از صفحه بیشتر شود تد...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Nautical Society of Japan
سال: 1951
ISSN: 2433-0116
DOI: 10.9749/jina.4.5.0_81