Thermal-hydrualic performance under partial and completely wet conditions: In order to investigate the performance of heat exchangers at partial wetting
condition, the experiments were conducted at 80 F (DB), 67 F (WB) conditions and the existing water temperature was analyzed to made sure that heat exchanger is partially wet during the operation.
S, Voue, M, de Ruijter, MJ, Dehuit, J, De Coninck, J, "Dynamics of Spontaneous Spreading on Heterogeneous Surfaces in a Partial Wetting
Regime." J Phys.
Thome, "A VOF method coupled with a dynamic contact angle model for simulation of two-phase flows with partial wetting
," in Proceedings of the 7th International Conference on Multiphase Flow (ICMF '10), Tampa, Fla, USA, 2010.
A negative spreading factor S, on the other hand, means a liquid drop will be formed on the solid surface with a certain contact angle, that is, partial wetting
. In the partial wetting
regime, if a contact angle is less than 90[degrees], a surface is called hydrophilic.
When a drop is place on the sample and it remain stuck in its place, the sample surface is called hydrophobic and this phenomena is called partial wetting
. The wettability of a sample surface can be determined by calculate the contact angle of a liquid that droplet resting on a solid surface.
The effect of partial wetting
of the root zone on yield and water use efficiency in a drip and sprinkler-irrigated mature grapefruit grove.
* Partial wetting
efficiency of upto 90% is assumed
In addition to complete encapsulation, partial wetting
, in which particles of one phase are attached to another, also occurred.
This is not an absolute number since partial wetting
can occur at lower figures and this may be enough to obtain a good result.