Thermal systems in general use newtonian fluids for exchange of heat. However limited researchers have worked in this area of non newtonian fluids. What could be the application? Where could they be used in specific?
Non-Newtonian characteristics are typical of a wide variety of fluids, such as concentrated and dilute polymer solutions, polymer melts, filled polymer melts, suspensions of particles, suspensions of immiscible liquids and surfactant solutions. The applications where their presence changes heat transfer characteristics are, for example, manufacture of plastic products by injection and extrusion, the production of paints, food products, and chemicals. The use of non-Newtonian drag reducing fluids in central heating systems is known to be in practice in Japan. There has, therefore, been a lot of research interest in the field of non-Newtonian fluid heat transfer.
The following book and review article might help in seeing the general areas covered by researchers in this field.
1. Aroon Shenoy, Heat Transfer to Non-Newtonian Fluids: Fundamentals and Analytical Expressions, Wiley-VCH (2018).
2. A. V. Shenoy, Non-Newtonian fluid heat transfer in porous media, Advances in Heat Transfer, Academic Press, N. Y., Vol. 24, p. 101 (1994).
I think the most important aspect is low cost and high specific heat capacity. Thus, water seems to be the most attractive option. Non-Newtonian or not, I don't think it is the main concern.
Water is a Newtonian fluid (which follows newton's law of viscosity, where shear stress is proportional to velocity gradient), whereas non Newtonian fluid (which doesn't follow Newton's law of viscosity, whereby shear stress is not proportional to velocity gradient). The example is ink etc.
Non-Newtonian characteristics are typical of a wide variety of fluids, such as concentrated and dilute polymer solutions, polymer melts, filled polymer melts, suspensions of particles, suspensions of immiscible liquids and surfactant solutions. The applications where their presence changes heat transfer characteristics are, for example, manufacture of plastic products by injection and extrusion, the production of paints, food products, and chemicals. The use of non-Newtonian drag reducing fluids in central heating systems is known to be in practice in Japan. There has, therefore, been a lot of research interest in the field of non-Newtonian fluid heat transfer.
The following book and review article might help in seeing the general areas covered by researchers in this field.
1. Aroon Shenoy, Heat Transfer to Non-Newtonian Fluids: Fundamentals and Analytical Expressions, Wiley-VCH (2018).
2. A. V. Shenoy, Non-Newtonian fluid heat transfer in porous media, Advances in Heat Transfer, Academic Press, N. Y., Vol. 24, p. 101 (1994).
Thank you Aroon Shenoy for providing me with an useful answer. Suggest the names of Non-Newtonian fluids and their use in brief?
Table 2.1 in the following books gives various types of Non-Newtonian Fluids by Fluid Type, Definition of the Type of the Non-Newtonian Fluid and Typical Examples.
1. Aroon V. Shenoy, Rheology of Filled Polymer Systems, Kluwer Academic Publishers, Netherlands (1999).
2. A. V. Shenoy and D. R. Saini, Thermoplastic Melt Rheology and Processing, Marcel Dekker Inc., New York (1996).
If you get a chance to lay your hands on one of these two books and have a look at the table, you will get a good enough idea of these types of fluids along with typical examples of each type.
Non- newtonian fluids are where shear stress is proportional to velocity gradient power N. where N1 dilatant fluids. they have gained importance in chemical engineering technology in order to cater industrial needs.
Thank you Ernest Ong for your reply and thanks to Aroon Shenoy for the useful answers.
All of us come across newtonian fluids which are existing like water. Several formulae and literature available is plenty. Non newtonian fluids like paper pulp and ink are available but the work is very limited in literature. However, the applications are existing.
Generally we come across equations and solutions for newtonian fluids. But even though non newtonian fluids, are used in our daily routine, the equations are somewhat difficult to use since they do not follow Newton's law of viscosity.
Newtonian fluids follow Newton's law of viscosity where shear stress is proportional to velocity gradient whereas non Newtonian fluids does not follow Newton's law of viscosity.
Non newtonian fluids like ink, paper pulp etc. used in our daily life does not follow Newton's law of viscosity where shear stress is directly proportional to temperature gradient.
Non Newtonian fluids are one which does not follow Newtons law of viscosity. Ink, paper pulp are examples of Non Newtonian fluids which are used regularly.
Non Newtonian fluids are one which does not be like ideal fluids and does not follow Newtons law of viscosity where shear stress is proportional to temperature gradient.
Non Newtonian fluids are classified as pseudoplastic fluids and dilatant fluids. The examples for these fluids are ink, paper pulp etc. They are particularly in use in our daily life. Newtonian fluids are also well known for us and are available example, water etc.
Non Newtonian fluids are fluids which does not have the characteristics of liquid like water. They do not follow the law, Newton's law of viscosity, but it follows as shear stress is proportional to velocity gradient to the power N where N can be less than 1 or greater than 1. N=0 for Newtonian fluids example water.
Non Newtonian fluids are the one which does not follow Newton's law of viscosity, in which shear stress is proportional to velocity gradient. Non Newtonian fluids are classified into pseudoplastic and dilatant fluids where velocity gradient varies as power of N. N can be 1.
Non Newtonian fluids are fluids which does not follow Newton's law of viscosity. They are classified as pseudoplastic and dilatant fluids. The fluids are ink, paper pulp etc.
Non Newtonian fluids called as pseudoplastic fluids as well as dilatant fluids are used regularly in daily life, but to determine certain parameters, the regular equations used for Newtonian fluids cannot be applied. Non Newtonian fluids follows the law, shear stress is proportional to velocity gradient to the power of N, where N is not equal to 1.
Non Newtonian fluids are fluids which does not follow Newton's law of viscosity. These types of fluids are used in our daily routine life. The characteristics of these fluids will not be in the lines of Newtonian fluids but they behave differently and their equations are also different.
As already pointed out in previous answers, Non Newtonian fluids follows the law, shear stress is proportional to velocity gradient to the power of N. The value of N is not equal to 1 but can have any value less than 1 or greater than 1.
Non Newtonian fluids does not follow the law of Newton's law of viscosity. The examples of this are wax, ink, paper pulp etc. They are also called as pseudoplastic or dilatant fluids.
Non Newtonian fluids are used in our daily life also called as pseudoplastic and dilatant fluids. Their performance are studied by conducting experiments and accordingly it was observed that the equations or calculations are different from Newtonian fluids.
There are fluids which does not follow the Newton's law of viscosity. These fluids are called as pseudoplastic or dilatant fluids. Ink, wax, paper pulp are examples of Non Newtonian fluids.
The performance, analysis and behaviour of Non Newtonian fluids are now been taken as research problems to analyse. The reason behind is to find the solution of certain Non Newtonian fluids, since they are not determined straightly as Newtonian fluids. The Newtonian fluid equations for this case cannot be used and modifications are necessary.
Non Newtonian fluids are fluids which does not follow Newton's law of viscosity where in, shear stress is proportional to velocity gradient. Non Newtonian fluids are also called pseudoplastic fluids or dilatant fluids. The examples of these fluids are ink, paper pulp, wax etc.
In polymer processing operations such as molding, extrusion, etc. non-Newtonian fluids are encountered as well as their thermal properties. Heat exchnagers employing these fluids will necessarily have to take into account the shear thinning and shear thickening properties of some of these fluids. Additionally manufacture of materials like toothpaste (a Bingham plastic fluid) would also consider the rheology of such fluids.
Non Newtonian fluids which does not behave not follow the relation as shear stress proportional to velocity gradient are paper pulp, wax and ink. Paper pulp is used to make paper and ink is used to write.
As fluids as in regular use, Non Newtonian fluids are also one of them. The difference is, they do not follow Newton's law of viscosity. This follows the law, shear stress is proportional to velocity gradient to the power N, where N not equal to 1. The examples are ink, wax, paper pulp etc.
Non Newtonian fluids are fluids which does not follow the law of Newton's law of viscosity but varies as shear stress is proportional to velocity gradient to the power N, where N is not equal to one. In daily life, various non newtonian fluids are used for example ink, paper pulp and wax.
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