Studies of Liquid Film Flow in Two-Phase Annular and Annular-Mist Flow Regions : Part 1, Downflow in a Vertical Tube
نویسندگان
چکیده
منابع مشابه
Numerical study of three-dimensional droplet impact on a flowing liquid film in annular two-phase flow
Annular flow with liquid entrainment occurs in a wide variety of two-phase flow system. A novel control volume finite element method with adaptive unstructured meshes is employed here to study threedimensional droplet deposition process in annular two-phase flow. The numerical framework consists of a ‘volume of fluid’ type method for the interface capturing and a force-balanced continuum surfac...
متن کاملlaminar flow in annular conduits
the flow of fluids in annular conduits has been studied for over sixty years, however the resulted data are very scattered. in this paper the problem is analytically solved, starting out with navier-stokes equations. a computer solution is used to determine the shape of velocity profiles, the discharge and the friction factor in a large number of concentric and eccentric annular conduits. the e...
متن کاملA method for bubble volume measurement under constant flow conditions in gas–liquid two-phase flow
Measuring the volume of a bubble, especially at its detachment, is a basic subject in gas-liquid two-phase flow research. A new indirect method for this measurement under constant flow conditions is presented. An electronic device is designed and constructed based on laser beam intensity. This device calculates the frequency of the bubble formation by measuring the total time of the formation p...
متن کاملThe Behavior Of Gas Bubbles Entrained In The Liquid Film Of Horizontal Annular Flow
Small entrained vapor bubbles can have a significant impact on the evaporation or condensation of a thin liquid film as may be found in the annular flow of refrigerant in a heat exchanger. For example, past work has indicated that unattached small vapor bubbles serve as sites for vaporization within a film that, on average, would be too thin to support nucleate boiling. Vapor entrained in a thi...
متن کاملExperimental Study on Liquid Film Thickness of Annular Flow in Microchannels
Many studies were carried out to investigate the flow and heat transfer characteristics of two-phase flow in microchannels because of its advantage in improving heat exchange performance, it has been well revealed that liquid film thickness and flow pattern play important roles in determining the heat transfer characteristics. However, these data is still limited to understanding properties of ...
متن کاملذخیره 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: Transactions of the Japan Society of Mechanical Engineers
سال: 1973
ISSN: 0029-0270,2185-9485
DOI: 10.1299/kikai1938.39.2835