What is installed in a vessel to change the direction of flow or promote the mixing of a fluid?

What is installed in a vessel to change the direction of flow or promote the mixing of a fluid?

• A. Baffle
• B. Diffuser
• C. Screen
• D. Venturi

Answer: (A)

The idea being tested is how fittings inside a vessel shape the liquid flow to improve mixing. A baffle is a flat plate mounted inside a tank that interrupts and redirects the flow. By forcing the liquid to move across the tank rather than in a simple circular loop, it breaks up large vortices and creates multiple, interacting flow paths. This increases turbulence and shear, which enhances mixing and heat or mass transfer, leading to a more uniform composition and temperature throughout the vessel. Diffusers slow and spread flow or recover pressure, and are used to distribute flow more evenly or reduce velocity, not primarily to change direction for mixing. Screens are for filtering or trapping debris, not for directing flow or promoting mixing. Venturi devices accelerate flow through a restricted throat to create a pressure drop or induce suction, but they don’t serve the purpose of redirecting flow inside a vessel to boost mixing.

The idea being tested is how fittings inside a vessel shape the liquid flow to improve mixing. A baffle is a flat plate mounted inside a tank that interrupts and redirects the flow. By forcing the liquid to move across the tank rather than in a simple circular loop, it breaks up large vortices and creates multiple, interacting flow paths. This increases turbulence and shear, which enhances mixing and heat or mass transfer, leading to a more uniform composition and temperature throughout the vessel.

Diffusers slow and spread flow or recover pressure, and are used to distribute flow more evenly or reduce velocity, not primarily to change direction for mixing. Screens are for filtering or trapping debris, not for directing flow or promoting mixing. Venturi devices accelerate flow through a restricted throat to create a pressure drop or induce suction, but they don’t serve the purpose of redirecting flow inside a vessel to boost mixing.