![]() ![]() △⍴ → change in the density of the material Characteristics of bulk modulus K → Bulk modulus, B also represents the Bulk modulus Substituting volume in terms of density, we get Here comes the concept of volume and density being inversely variable to each other. Therefore, to calculate the bulk modulus of fluids, the general formula alters by substituting volume in terms of density to write in terms of density. For fluids, the bulk modulus value is calculated and determined in terms of density as it applies better than volume in the case of fluids. ![]() Thus mathematically, the numerical value of the bulk modulus of fluids is also high. The pressure required is enormous to compress even a little amount of fluid in space. The bulk modulus has a dimensional formula of derived from the dimensional formulae of the bulk modulus components. Volume shrinks(a negative sign for volume change) when pressure is applied to the material. Vn → the change or decrease in the volume of the material P → Pressure applied to the elastic material K → Bulk modulus, B also denotes the Bulk modulus K = Pressure applied on the material / Change or decrease in the volume of the material. As per the definition, the bulk modulus formula is as follows. It is the numerical value of the stress divided by the strain on a material. Generally, the bulk modulus is given by the ratio of applied pressure to the change in the volume of the substance. It states that when pressure is applied to compact material, the volume change of the material is proportional to the force acting on the material. The law applying to the elasticity of materials is Hooke’s law. The three different moduli are as follows. All three moduli are related to the elastic properties of a material. At the same time, fluids employ only the bulk modulus. Solids generally employ all three moduli. This change in the fluid volume due to the pressure is called fluid elasticity. When less pressure applies, the volume of the fluid increases that is, it occupies more space. When more pressure applies, the fluid volume will decrease. Fluid elasticity means how idle the liquid is on exerting pressure on the fluid to compact its volume or extend it. Fluid Elasticityįluid elasticity refers to the elastic nature or property of a fluid substance. The bulk modulus of water is 2.15 × 109 Pa. The numerical value gives how incompressible the material is to applied external pressure. The fluid elasticity or compressibility employs bulk modulus to calculate a numerical value. When the pressure applied increases, the volume occupied by the material decreases, and pressure and volume are inversely proportional. The applied pressure alters the shape or size of the material. Elasticity is the property of any material or substance getting stretched or compacted by external pressure. ![]()
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