How do you make something less viscous?
When temperature increases, the energy level of liquid molecules increases and the distance between the molecule increases. It causes a decrease in inter-molecular attraction between them, which reduce viscosity. This can be observed, for example, cooking oil shows more fluidity after being heated.
What makes a liquid more or less viscous?
Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances. Liquids containing long molecules are invariably very viscous.
Does viscosity increase with mixing?
Dilatant liquids (slurries, clay, and candy compounds): viscosity increases as shear rate increases. Mixers can bog down and stall after initially mixing such liquids.
What’s the least viscous liquid?
The least viscous at any temperature must be superfluid liquid helium.
How can water viscosity be reduced?
The reduction of size of the clusters is achieved through electrolysis of the water. The electrolysis of the water permanently breaks the hydrogen bonds between the water molecules and thus dissociates the clusters of water molecules, thereby reducing the viscosity of water.
What is the lowest viscosity liquid?
What are viscous liquids?
Fluids that have higher viscosity are known as viscous fluid. Examples of viscous fluids are honey and ketchup. The fluid that has more flow resistance is referred to as viscous fluid.
How do you mix viscous liquids?
When blending liquids of high and low viscosity, start with the low viscosity liquid and add the higher. This is more energy efficient, because the mixer doesn’t need to be sized to process the highest viscosity.
Which mixer is used for the mixing of more viscous liquid?
Double-Helix Impellers A double-helix impeller is commonly used to blend high viscosity fluids operating in a laminar flow regime. The helical ribbons in this impeller are designed for close wall clearance. They operate at relatively slow speeds rotating in a direction to create fluid movement up along the wall.
Which mixer is used for mixing of more viscous liquid?
Which liquid is the most viscous least viscous?
Out of all the liquids I tested (honey, water, milk, cooking oil, glycerin, hand sanitizer, and syrup), honey is the most viscous and milk is the least.
What happens when you mix high and low viscosity?
To better understand the ramifications of high-viscosity mixing, let’s first review a much simpler case — that of turbulent flow in low-viscosity mixing. When a turbine-type mixer creates turbulence in the lower viscosity ranges (less than 5,000 centipoise), the resulting flow is chaotic.
How does viscosity affect the motion of a mixer?
Viscosity has the effect of resisting fluid motion, so the motion created by a mixer impeller in a viscous fluid may die out before it moves the entire contents of the tank. With all non-Newtonian fluids, the potential exists that a portion of a tank will remain unmixed because of inadequate fluid motion.
What causes poor mixing of liquids and solids?
Reasons for Poor Mixing • Lack of understanding of material characteristics • Inadequate, inaccurate definition of mixing objectives • Incorrect selection of mixer • Wrong scale-up techniques • Limited knowledge on mixing equipment design, parameters 9.
How is agitation related to the mixing of liquids?
Mixing therefore requires a definition of degree and/or purpose to clearly define the desired state of the system [Ludwig, 1995]. Agitation – Agitation implies forcing a fluid by mechanical means to generate flow. Agitation does not necessarily imply any significant amount of actual intimate and homogeneous distribution of the fluid [Ludwig, 1995].