Momemtum Transfer Lab

The apparatus has been designed to introduce students to the fundamental characteristics of the behavior of the particle system, in particular the relationship between the drag coefficient of falling particles and Reynolds number. Particles covering a range of sizes and densities are supplied and the experiments are conducted by allowing single particles to fall through a number of different liquids contained in a vertical glass tube. The rate of fall of the particle is determined by timing their passage between two marks on the walls of the glass tubes. Observation of the particle movement is aided by the provision of a shielded fluorescent tube light mounted on the backboard. Particles can be removed from the bottom of the tubes without the necessity of draining the liquid. A valve system is provided at the bottom of each tube to allow the particles to be removed with the minimum loss of liquid.

Helical coils are used for heating or cooling in process tanks. When a fluid flows through a curved tube, centrifugal force acting upon the various elements of fluid moving with different velocities causes secondary circulation. Secondary flow results in higher heat transfer characteristics. Further, secondary flow stabilizes the laminar flow leading to a higher critical Reynolds number for transition from laminar to turbulent flow.

The setup consists of a glass column with fluidizing material i.e. beads, S.S. mesh to support the beads and with calming section. Pressure drop across fluidization can be measured by manometer. The setup studies in fluidization characteristics and relationship between the velocity of the fluid and pressure drop per unit length. The apparatus is close circuit type provided with suitable capacity tank, FHP pump, necessary pipeline valves and a Rotameter to measure the flow rate of fluid. The setup is fitted on a MS frame painted with good quality paint.

The set-up consists of a glass column packed with packing material i.e. Rasching rings, SS mesh to support the packing and with calming section. Pressure drop across packed bed can be measured by a manometer. The apparatus is close circuit type provided with tank, Pump, necessary piping, valves and Rotameter to measure the flow rate of fluid. The set-up is fitted on a MS frame and painted with good quality corrosion resistant paint.