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Such as, a vessel has a speed of 8 knots through the water and the vessel is traveling with the current, which is at 2 knots, then the speed over ground is 8+2 and the vessel's true speed is 10 knots. Set and Drift can be calculated by using a vector diagram and can be drawn and measured on a chart, maneuvering board or even a plain piece of paper.
The residence time of a fluid parcel is the total time that the parcel has spent inside a control volume (e.g.: a chemical reactor, a lake, a human body).The residence time of a set of parcels is quantified in terms of the frequency distribution of the residence time in the set, which is known as residence time distribution (RTD), or in terms of its average, known as mean residence time.
Drainage equation. A drainage equation is an equation describing the relation between depth and spacing of parallel subsurface drains, depth of the watertable, depth and hydraulic conductivity of the soils. It is used in drainage design. A well known steady-state drainage equation is the Hooghoudt drain spacing equation.
The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt): If the ...
Fractionation at total reflux. The Fenske equation in continuous fractional distillation is an equation used for calculating the minimum number of theoretical plates required for the separation of a binary feed stream by a fractionation column that is being operated at total reflux (i.e., which means that no overhead product distillate is being withdrawn from the column).
an augerhole is perforated into the soil to below the water table; water is bailed out from the augerhole; the rate of rise of the water level in the hole is recorded; the K-value is calculated from the data as: [8] = where: K is the horizontal saturated hydraulic conductivity (m/day)
The Universal Soil Loss Equation (USLE) is a widely used mathematical model that describes soil erosion processes. [1]Erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including: sediment load assessment and inventory, conservation planning and design for sediment control, and for the advancement of scientific understanding.
If the bay number is odd it is suitable for 20 feet containers, if the bay number is even it is suitable for 40 feet containers. [3] [12] Container slot, position or cell – names of the spaces that containers can be loaded in. On a stowage plan their positions are identified by a six-digit coordinate number: Bay-Bay-Row-Row-Tier-Tier. [3] [5 ...