Natural convection in a mushy layer
... dendritic matrix. They suggested that these convectively formed chimneys are the cause of the ‘freckles ’ that are observed in completely solidified ingots. Freckles are impcrfections that interrupt the uniformity of the microstructure of a casting, causing areas of mechanical weakness. There have b ...
... dendritic matrix. They suggested that these convectively formed chimneys are the cause of the ‘freckles ’ that are observed in completely solidified ingots. Freckles are impcrfections that interrupt the uniformity of the microstructure of a casting, causing areas of mechanical weakness. There have b ...
Hydraulic/Shock-Jumps in Protoplanetary Disks
... and through gap formation (Bryden et al. 1999; Bate et al. 2003). The ability of radially propagating waves to transport angular momentum, and also influence gap formation, is dependent on the thermal stratification of the disk (e.g., Lin et al. 1990; Lubow & Ogilvie 1998). Thus, the vertical direct ...
... and through gap formation (Bryden et al. 1999; Bate et al. 2003). The ability of radially propagating waves to transport angular momentum, and also influence gap formation, is dependent on the thermal stratification of the disk (e.g., Lin et al. 1990; Lubow & Ogilvie 1998). Thus, the vertical direct ...
67066d5ef22c412
... The prime function of a check valve is to protect mechanical equipment in a piping system by preventing reversal of flow by the fluid. This is particularly important in the case of pumps and compressors, where back flow could damage the internals of the equipment and cause an unnecessary shutdown of ...
... The prime function of a check valve is to protect mechanical equipment in a piping system by preventing reversal of flow by the fluid. This is particularly important in the case of pumps and compressors, where back flow could damage the internals of the equipment and cause an unnecessary shutdown of ...
Convective flow and heat transfer in a channel containing multiple
... of mean Nusselt numbers and thermal wake functions were made for 5 column by 21 row array of low profile obstacles, with only the first 10 rows heated, by Lehmann and Pembroke [5]. The square cross section obstacles had a large width to height ratio ( N 17) and were closely spaced. Variations in cha ...
... of mean Nusselt numbers and thermal wake functions were made for 5 column by 21 row array of low profile obstacles, with only the first 10 rows heated, by Lehmann and Pembroke [5]. The square cross section obstacles had a large width to height ratio ( N 17) and were closely spaced. Variations in cha ...
Pdf - Text of NPTEL IIT Video Lectures
... shown in this figure. So here the friction drag is lower than the pressure drag in the case of bluff body. So bluff body, the friction drag is smaller and pressure drag is more. Then in the case of streamline body the friction drag is higher and then the pressure drag is much smaller. These are the ...
... shown in this figure. So here the friction drag is lower than the pressure drag in the case of bluff body. So bluff body, the friction drag is smaller and pressure drag is more. Then in the case of streamline body the friction drag is higher and then the pressure drag is much smaller. These are the ...
Average velocity of solitary coarse grain in flows over smooth and
... In the following, individual data analysis is performed for each case to check applicability of the foregoing theoretical consideration. ...
... In the following, individual data analysis is performed for each case to check applicability of the foregoing theoretical consideration. ...
Simulation of boundary slip on a liquid
... studies show that the fluid near the boundary can slip in the case of micro-scale flow 1, 2 and a clear boundary slip phenomenon can be observed at a smaller scale 3 . Compared with the inertial force and the electromagnetic force, the surface tension and the friction increase greatly with the decre ...
... studies show that the fluid near the boundary can slip in the case of micro-scale flow 1, 2 and a clear boundary slip phenomenon can be observed at a smaller scale 3 . Compared with the inertial force and the electromagnetic force, the surface tension and the friction increase greatly with the decre ...
Bubbles in Magma Module - University of South Florida
... because gas, ultimately the Earth’s atmosphere itself, is carried to the Earth’s surface in bubbles. Here we have dealt in detail with the decompression of bubbles, but the topic is even more complex. The physics of bubble nucleation (where, when, and why bubbles form) is another extremely important ...
... because gas, ultimately the Earth’s atmosphere itself, is carried to the Earth’s surface in bubbles. Here we have dealt in detail with the decompression of bubbles, but the topic is even more complex. The physics of bubble nucleation (where, when, and why bubbles form) is another extremely important ...
b. Positive-Displacement Pumps. - Universal College of Engineering
... caused by worn or damaged parts, which will spread harmful particles through a system, causing more damage if an operation continues. ...
... caused by worn or damaged parts, which will spread harmful particles through a system, causing more damage if an operation continues. ...
aircraft hydraulics
... This type of reservoir is very difficult to maintain. Also, bubbles trapped within this system cannot be removed very easily. Its good points are that it is foamless and has no air which can be trapped in the fluid due to its operation. cavitation Cavitation occurs when a liquid (such as oil) moves ...
... This type of reservoir is very difficult to maintain. Also, bubbles trapped within this system cannot be removed very easily. Its good points are that it is foamless and has no air which can be trapped in the fluid due to its operation. cavitation Cavitation occurs when a liquid (such as oil) moves ...
Chapter 2 - Viscosity of Fluids
... Identify the units of viscosity. Describe the difference between a Newtonian fluid and a nonNewtonian fluid. Describe the methods of viscosity measurement using the rotating-drum viscometer, the capillary-tube viscometer, the falling-ball viscometer, and the Saybolt Universal viscometer. Describe th ...
... Identify the units of viscosity. Describe the difference between a Newtonian fluid and a nonNewtonian fluid. Describe the methods of viscosity measurement using the rotating-drum viscometer, the capillary-tube viscometer, the falling-ball viscometer, and the Saybolt Universal viscometer. Describe th ...
Chapter 9. Modeling Flows in Moving Zones
... The single rotating frame option can be used to model flows in turbomachinery, mixing tanks, and related devices. In each of these cases, the flow is unsteady in an inertial frame (i.e., a domain fixed in the laboratory frame) because the rotor/impeller blades sweep the domain periodically. However, ...
... The single rotating frame option can be used to model flows in turbomachinery, mixing tanks, and related devices. In each of these cases, the flow is unsteady in an inertial frame (i.e., a domain fixed in the laboratory frame) because the rotor/impeller blades sweep the domain periodically. However, ...
1. introduction
... VAPOUR PRESSURE:All liquids exhibit tendency for evaporation, Evaporation takes place at the surface of liquid. If the kinetic energy of liquid molecules overcomes the intermolecular force of attraction in the liquid state then the molecule from the surface of liquid escapes into the space above the ...
... VAPOUR PRESSURE:All liquids exhibit tendency for evaporation, Evaporation takes place at the surface of liquid. If the kinetic energy of liquid molecules overcomes the intermolecular force of attraction in the liquid state then the molecule from the surface of liquid escapes into the space above the ...
Design and verification testing of new balance piston for High Boost
... run at high speed at a low differential pressure without risk of high temperatures or rotordynamic instabilities due to low flowrate through the balance piston. In a classical single phase application, the leakage rate through the balance piston is controlled by the main parameters length, diameter, ...
... run at high speed at a low differential pressure without risk of high temperatures or rotordynamic instabilities due to low flowrate through the balance piston. In a classical single phase application, the leakage rate through the balance piston is controlled by the main parameters length, diameter, ...
Nucl. Instrum. Methods A378, 383 (1996).
... flow determination were estimated to be about 10%: the dominant error is the absolute uncertainty in the fluid temperature, resulting in an uncertainty in the specific heat. The pump efficiency is clearly lower for the 30-times denser liquid than for 20 K helium gas. The data also might indicate tha ...
... flow determination were estimated to be about 10%: the dominant error is the absolute uncertainty in the fluid temperature, resulting in an uncertainty in the specific heat. The pump efficiency is clearly lower for the 30-times denser liquid than for 20 K helium gas. The data also might indicate tha ...
Investigating Shock Wave—Boundary Layer Interaction Caused By
... occur under certain conditions. Mark (1958) developed a simple criterion for when shock waves bifurcate. He theorized that bifurcation will occur if the stagnation pressure in the boundary layer in the shock-fixed frame is less than the pressure behind the normal shock. When using this criterion, it ...
... occur under certain conditions. Mark (1958) developed a simple criterion for when shock waves bifurcate. He theorized that bifurcation will occur if the stagnation pressure in the boundary layer in the shock-fixed frame is less than the pressure behind the normal shock. When using this criterion, it ...
Efficient Transport Protocol for Networked Haptics Applications Raul Wirz , Raul Mar´ın
... and the RTT (Round Trip Time) that is the time elapsed for a packet to go to the receiver and back again. These two aspects are the most important when a new protocol is designed to use in interactive applications. RTT Behavior In interactive applications we can find at least two different flows: Th ...
... and the RTT (Round Trip Time) that is the time elapsed for a packet to go to the receiver and back again. These two aspects are the most important when a new protocol is designed to use in interactive applications. RTT Behavior In interactive applications we can find at least two different flows: Th ...
BAL Collection in Cows and Calves - University of Wisconsin School
... inserted into the end of the BAL tube and 240-ml of sterile saline is infused using 60-ml syringes. Immediately after the 240 ml infusion, negative pressure is applied to aspirate fluid, a process that can yield up to 120 ml of mildly turbid, foamy fluid. Mucus and purulent flecks may be visualized ...
... inserted into the end of the BAL tube and 240-ml of sterile saline is infused using 60-ml syringes. Immediately after the 240 ml infusion, negative pressure is applied to aspirate fluid, a process that can yield up to 120 ml of mildly turbid, foamy fluid. Mucus and purulent flecks may be visualized ...
Modeling the Sedimentation of Red Blood Cells in
... relatively simple. Hence, together with the frontal area, the DI can describe the main character of the deformation. Figure 5 shows the variation of the DI of a RBC according to the external magnetic body force. As depicted in Figure 2, during the sedimentation of RBC, the frontal surface with resp ...
... relatively simple. Hence, together with the frontal area, the DI can describe the main character of the deformation. Figure 5 shows the variation of the DI of a RBC according to the external magnetic body force. As depicted in Figure 2, during the sedimentation of RBC, the frontal surface with resp ...
C100
... the fin thickness, and the required mass flow rate. Once these parameters are known, the pressure drop can be calculated using Eq. (13). The objective in finding these parameters is to have the lowest value of the pressure drop under the given constraints. To solve this problem, the following algori ...
... the fin thickness, and the required mass flow rate. Once these parameters are known, the pressure drop can be calculated using Eq. (13). The objective in finding these parameters is to have the lowest value of the pressure drop under the given constraints. To solve this problem, the following algori ...
UNITY****
... Wind Turbine Generator Paper Model by Kazuyoshi WASEDA is licensed under a Creative Commons 表示 - 継承 4.0 国際 License. Refer to the production released in http://www.kobe-kosen.ac.jp/~waseda/wtgpapermodel/index-e.html Check the following adress for the additional use of the files that is not permitted ...
... Wind Turbine Generator Paper Model by Kazuyoshi WASEDA is licensed under a Creative Commons 表示 - 継承 4.0 国際 License. Refer to the production released in http://www.kobe-kosen.ac.jp/~waseda/wtgpapermodel/index-e.html Check the following adress for the additional use of the files that is not permitted ...
Liquid Rope Coiling
... The origin of liquid-rope coiling effect is based on the un-isotropic nature of the viscous liquid internally, the viscosity plays a significant role to determine whether the phenomenon will be observed or not. The bucking phenomenon is the response of fluid to its impact on substrate and itself is ...
... The origin of liquid-rope coiling effect is based on the un-isotropic nature of the viscous liquid internally, the viscosity plays a significant role to determine whether the phenomenon will be observed or not. The bucking phenomenon is the response of fluid to its impact on substrate and itself is ...
Aerodynamics
Aerodynamics, from Greek ἀήρ aer (air) + δυναμική (dynamics), is a branch of Fluid dynamics concerned with studying the motion of air, particularly when it interacts with a solid object, such as an airplane wing. Aerodynamics is a sub-field of fluid dynamics and gas dynamics, and many aspects of aerodynamics theory are common to these fields. The term aerodynamics is often used synonymously with gas dynamics, with the difference being that ""gas dynamics"" applies to the study of the motion of all gases, not limited to air.Formal aerodynamics study in the modern sense began in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag have been recorded much earlier. Most of the early efforts in aerodynamics worked towards achieving heavier-than-air flight, which was first demonstrated by Wilbur and Orville Wright in 1903. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer simulations has formed the scientific basis for ongoing developments in heavier-than-air flight and a number of other technologies. Recent work in aerodynamics has focused on issues related to compressible flow, turbulence, and boundary layers, and has become increasingly computational in nature.