A liquid falling between horizontal tubes can take the form of droplets, jets, or a continuous sheet mode, depending on the flow rate. The so-called falling-film flow regime is important to heat and mass transfer, and to maintaining wetted-surface conditions in a falling-film tube bundle, and the performance of such tube bundles is important in many air-conditioning systems. In this paper, we r...

the present study investigated the influence of air temperature and velocity on the drying kinetics and specific energy consumption during fluidized bed drying of soybean at 80, 100, 120 and 140ºc and airflow rates of 1.8, 3.1 and 4.5 m s-1. six mathematical models for describing the fluidized bed drying behavior were investigated. the value of the drying rate coefficient (k) increased with inc...

Methods for rendering falling snow typically use particle systems [Reeves 1983] which requires tens of thousands of particles (snowflakes) and thus can be expensive. Here we present an alternative method for rendering falling snow which does not use particles, and instead uses an inverse Fourier transform. Our idea is based on a well-known fact that pure image translation with velocity (vx,vy) ...

In autumn, maple trees disperse their seeds by employing autorotation under windy conditions. Maple seeds equipped with a small wing begin to autorotate within 1 m after they are detached from trees, and the autorotating motion generates the lift force that slows down its descent [1,2]. From measurements using digital particle image velocimetry (DPIV), it was elucidated that a stable leading-ed...

‎The water wave generation by wave paddle and a freely falling rigid body are examined by using an Incompressible Smoothed Particle Hydrodynamics (ISPH)‎. ‎In the current ISPH method‎, ‎the pressure was evaluated by solving pressure Poisson equation using a semi-implicit algorithm based on the projection scheme and the source term of pressure Poisson equation contains both of divergence free ve...

Laboratory measurements of drying rates and elastic wave velocities are made on limestone, dolomite, and sandstone samples during evaporative drying. The drying rate data are very similar in form. There is a constant rate period at higher saturations and a falling rate period below saturation levels of approximately 0.2. The falling rate period marks the transition in the sample from hydraulica...