SOLVMANN by Ted Olsen (DOS)
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SOLVMANN (128KB) will find the solution to "Manning's" equation for trapezoidal canal sections from two distinct approaches: It will find a straight forward algebraic solution of the Manning Equation for the "velocity" and the resulting "discharge" when the cross-sectional geometry; the roughness factor, n; the longitudinal slope; and the depth of flow in the channel are given.
SOLVMANN will also solve the Manning Equation for the "depth" of flow by the Newton-Raphson iterative procedure if the cross-sectional geometry; the roughness factor, n; the longitudinal slope; and the discharge are given. It then determines the resulting "velocity" of water movement in addition to the depth.
Too, SOLVMANN will solve the Manning Equation for the required "slope" to carry a given discharge at a required depth in a channel cross-section of a design trapezoidal shape. The solution methodology is chosen by the user by selecting the appropriate option button in the user interface window. The Froude Number is also determined by all methods. If the Froude Number is found to be greater than 0.95, the user is alerted by an audible alarm and the number is shown in a "red" box. If the Froude Number is found to be greater than 0.85 but less than or equal to 0.95, an audible "beep" is sounded and the number is shown in a "yellow" box. These alerts are given only to bring the high Froude Number to the user's attention in the user interface window. SOLVMANN will present the user interface prompts and labels in either English or Spanish. The user need only choose the desired language by selecting the appropriate option button in the user interface window.
For more information about the software:
E-mail: ted@cc.usu.edu
