WebbIt forms a shape that looks something like that. And so the first thing we might ask is what'll we call this thing. And this right over here is called a meniscus. Meniscus. And in particular this meniscus, because the fluid is higher near the container than it is when you're away from the container, we would call this a concave, concave meniscus. Webb20 juni 2024 · tan α = positive ∴ α is acute angle i.e., the resultant force directed outside the liquid. Hence the liquid meniscus must be concave upward. Example : Water in glass capillary tube. F c > √2F a . tan α = negative ∴ α is obtuse angle i.e., the resultant force directed inside the liquid. Hence the liquid meniscus must be convex upward.

On the Meniscus Shape and Marangoni Flow in Capillary Tubes …

WebbIn this paper, a simple geometry method is proposed to solve the force balance equation on the liquid meniscus. Based on a proper model for the macroscopic dynamic contact … WebbProvided that the depen- dence of the angle of contact on the cone angle of the crystal is properly represented [1] the meniscus shape will be the same as for a vertical, inert … eztravel易遊網折扣碼

Simulation of liquid meniscus formation in the ionic liquid ...

Webb24 feb. 2024 · For an obtuse angle of contact, which is greater than 90 degrees, the liquid meniscus will have a concave shape. This is because the adhesive forces between the liquid molecules and the solid surface are stronger than the cohesive forces between the liquid molecules. WebbFor a sufficiently narrow tube with circular cross-section, the shape of the meniscus will approximate a section of a spherical surface, while for a large container, most of the upper surface of the liquid will be almost flat, only curving up (if concave) or down (if convex) … WebbΔ P h = ρ g h. whereas the capillary pressure is. Δ P c = 2 γ R = 2 γ cos θ r. So balancing these we get our 'famous' equation: h = 2 γ cos θ ρ g r. Now we have a situation in which the height of our tube above the liquid, h m a x is smaller than h. For an equilibrium situation we still need the hydrostatic pressure and the capillary ... eztravel 晶華