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Linear Orifice Flow Meter Variable Description Table: in order of appearance in code

Variable Name

Variable Description
Unknown macro: {latex}

$$ N_

Unknown macro: {Lfom}

$$

Number of riser pipes
Unknown macro: {latex}

$$ K_

Unknown macro: {Rm}

$$

minor loss coefficient for rapid mix
Unknown macro: {latex}

$$ A_

Unknown macro: {LfomOrificeTotal}

$$

Combined area of all orifices
Unknown macro: {latex}

$$ A_

Unknown macro: {Orifice}

$$

function for determining the orifice areas as the vertical distance on the riser pipe increases
Unknown macro: {latex}

$$ HL_

Unknown macro: {Lfom}

$$

headloss through the Lfom, and the minimum height of the water in the entrance tank
Unknown macro: {latex}

$$ Pi_

Unknown macro: {VenaContractaOrifice}

$$

minor loss coefficient for an orifice (was K orifice)
Unknown macro: {latex}

$$ Q_

Unknown macro: {Plant}

$$

plant flow rate
Unknown macro: {latex}

$$ ID_

Unknown macro: {Lfom}

$$

the inner diameter of the riser pipe
Unknown macro: {latex}

$$ Pi_

Unknown macro: {LfomOrificeArea}

$$

ratio of LFOM pipe area to orifice area
Unknown macro: {latex}

$$ ND_

Unknown macro: {Lfom}

$$

nominal diameter of the riser pipe and rapid mix pipe
Unknown macro: {latex}

$$ EN_

Unknown macro: {PipeSpec}

$$

enumerated type of pipe
Unknown macro: {latex}

$$ HL_

Unknown macro: {Rm}

$$

rapid mix head loss
Unknown macro: {latex}

$$ L_

Unknown macro: {RmPipe}

$$

The total pipe length betweeen the bottom of the orifices and the flocculator
Unknown macro: {latex}

$$ Nu_

Unknown macro: {Water}

$$

viscosity of water through the plant
Unknown macro: {latex}

$$ E_

Unknown macro: {Pvc}

$$

PVC pipe roughness
Unknown macro: {latex}

$$ H_

Unknown macro: {Ramp}

$$

Function based off of ramp functions, this is an incremental function that all ows other funtions to evaluate one level of orifices at a time
Unknown macro: {latex}

$$ B_

Unknown macro: {LfomOrifice}

$$

vertical distance between orifices
Unknown macro: {latex}

$$ Pi_

Unknown macro: {LfomH}

$$

elevation between orifice rows at which the flow is calibrated, a 0 or 1 value. 0 corresponds to the current row and 1 corresponds to the next row
Unknown macro: {latex}

$$ Q_

Unknown macro: {Ramp}

$$

funtion to determine target riser pipe flow, incrementally calculates flows
Unknown macro: {latex}

$$ Q_

Unknown macro: {LfomActual}

$$

funtion to determine actual flow through orifices
Unknown macro: {latex}

$$ n_

Unknown macro: {LfomOrifices}

$$

number of orifices
Unknown macro: {latex}

$$ D_

Unknown macro: {LfomOrifices}

$$

diameter of Lfom orifices
Unknown macro: {latex}

$$ D_

Unknown macro: {Circle}

$$

function that determines the diamter of a circle given the area
Unknown macro: {latex}

$$ D_

Unknown macro: {Drill}

$$

function that determines the drill bit size necessary
Unknown macro: {latex}

$$ N_

Unknown macro: {LfomOrificesFirstrow}

$$

arbitrary value determines the number of orifices in the first row, currently 5 is selected
Unknown macro: {latex}

$$ Q_

Unknown macro: {LfomError}

$$

percent error in the actual flow rate compared to theoretical values
Unknown macro: {latex}

$$ Q_

Unknown macro: {LfomErrorMax}

$$

maximum error of Q_LfomError array
Unknown macro: {latex}

$$ HL_

Unknown macro: {EtFloc}

$$

headloss from the entrance tank to the flocculator
Unknown macro: {latex}

$$ ZW_

Unknown macro: {Et}

$$

water depth of entrance tank relative to the bottom of the sedimation tank
Unknown macro: {latex}

$$ HW_

Unknown macro: {FlocStart}

$$

height of the start of the floculation tank relative to the bottom of the sedimention tank
Unknown macro: {latex}

$$ H_

Unknown macro: {LfomFreefall}

$$

difference between height of water in floculation tank and the bottom set of orifices on the LFOM
Unknown macro: {latex}

$$ HW_

Unknown macro: {Etmax}

$$

maximum water level in entrance tank
Unknown macro: {latex}

$$ HW_

Unknown macro: {Etmin}

$$

minimum water level in entrance tank
Unknown macro: {latex}

$$ H_

Unknown macro: {Et}

$$

height of entrance tank walls
Unknown macro: {latex}

$$ H_

Unknown macro: {PlantFreeBoard}

$$

height of entrance tank above the top of the riser pipe
Unknown macro: {latex}

$$ H_

Unknown macro: {LfomSF}

$$

safety factor of height of riser pipe above top row of orifices
Unknown macro: {latex}

$$ L_

Unknown macro: {Lfom}

$$

height of the riser pipe
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