What is the meaning of polytropic?
: visiting many kinds of flowers for nectar —used of an insect polytropic bees — compare monotropic, oligotropic.
What is isotropic in thermodynamics?
Isotropic systems are uniform regardless of direction. Radiation may be isotropic when the the observed intensity is the same in all directions from the source. A fluid may be called isotropic if the relationships between stress and rate of strain is the same in all directions.
What is polytropic process example?
the case < n < ∞, in this process heat and work flows go in the same direction, This process occurs, for example, in an internal combustion engine (e.g. Otto cycle), in which there are heat loses through the cylinder walls during gas expansion (power stroke).
What is a polytropic process used for?
The combustion process and combustion analysis where P is the pressure, V is specific volume, n is the polytropic index, and C is a constant. The polytropic process equation can be used to compute a crank angle based curve of C (where n can be estimated).
What is a polytropic factor?
A polytropic process is a thermodynamic process that obeys the relation: where p is the pressure, V is volume, n is the polytropic index, and C is a constant. The polytropic process equation can describe multiple expansion and compression processes which include heat transfer.
Is polytropic isothermal?
Isothermal process are a subset of the polytropic. Polytropic encompass all other common processes and more. standard notation implying C is a constant, P the pressure and V the volume.
What is isotropic cycle?
In thermodynamics, an isentropic process is an idealized thermodynamic process that is both adiabatic and reversible. The work transfers of the system are frictionless, and there is no net transfer of heat or matter.
Is an isotropic process?
An isotropic process is the opposite of a module. It is a general purpose problem solver, and is non-modular because in principle it must have access to all possible information stored in a cognitive system, because at some point in time this information may be required.
What is definition of polytropic process in thermodynamics?
Is polytropic adiabatic?
PVn = constant Where P is the pressure, V is the volume and n is a constant. Hence, to hold PV constant in the polytropic gas expansion/compression process, both heat and work interchange takes place between the system and surrounding. Therefore, polytropic is a non-adiabatic process.
How do you calculate polytropic process?
Polytropic Process can be defined as the process in which heat absorbed by the gas due to unit rise in temperature is constant. A polytropic process is a thermodynamic process that can be expressed using the following equation. PVn=C, It is aPolytropic process equation.
How is the polytropic process of an ideal gas described?
Polytropic Process of an Ideal Gas. • The relationship between the pressure and volume during compression or expansion of an ideal gas can be described analytically. One form of this relationship is given by the equation pVn = constant.
Which is the correct equation for a polytropic process?
One form of this relationship is given by the equation pVn = constant. • where n is a constant for the particular process. • A thermodynamic process described by the above equation is called a Polytropic process. • For a Polytropic process between two states 1-2 p V p Vn constant 2 2 n 1 1 = =.
How is the polytropic coefficient related to the ratio of energy transfers?
Equivalence between the polytropic coefficient and the ratio of energy transfers. For an ideal gas in a closed system undergoing a slow process with negligible changes in kinetic and potential energy the process is polytropic, such that where C is a constant, , , and with the polytropic coefficient .
When does a polytropic curve cut through a bounding curve?
When the index n is between any two of the former values (0, 1, γ, or ∞), it means that the polytropic curve will cut through (be bounded by) the curves of the two bounding indices.