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Linear

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Orifice

...

Flow

...

Meter

...

Variable

...

Description

...

Table:

...

in

...

order

...

of

...

appearance

...

in

...

code

...

Variable

...

Name

...

Variable

...

Description

...

Latex
 $$ N_{Lfom} $$

...

Number 
...
 of 
...
 riser 
...
 pipes
...
 Latex
 $$ K_{Rm} $$ 
...
minor 
...
 loss 
...
 coefficient 
...
 for 
...
 rapid 
...
 mix
...
 Latex
 $$ A_{LfomOrificeTotal} $$ 
...
 Combined 
...
 area 
...
 of 
...
 all 
...
 orifices
...
 Latex
 $$ A_{Orifice} $$ 
...
function 
...
 for 
...
 determining 
...
 the 
...
 orifice 
...
 areas 
...
 as 
...
 the 
...
 vertical 
...
 distance 
...
 on 
...
 the 
...
 riser 
...
 pipe 
...
 increases
...
 Latex
 $$ HL_{Lfom} $$ 
...
 headloss 
...
 through 
...
 the 
...
 Lfom, 
...
 and 
...
 the 
...
 minimum 
...
 height 
...
 of 
...
 the 
...
 water 
...
 in 
...
 the 
...
 entrance 
...
 tank
...
 Latex
 $$ Pi_{VenaContractaOrifice} $$ 
...
minor 
...
 loss 
...
 coefficient 
...
 for 
...
 an 
...
 orifice 
...
 (was 
...
 K 
...
 orifice)
...
 Latex
 $$ Q_{Plant} $$ 
...
plant 
...
 flow 
...
 rate
...
 Latex
 $$ ID_{Lfom} $$ 
...
the 
...
 inner 
...
 diameter 
...
 of 
...
 the 
...
 riser 
...
 pipe
...
 Latex
 $$ Pi_{LfomOrificeArea} $$ 
...
ratio 
...
 of 
...
 LFOM 
...
 pipe 
...
 area 
...
 to 
...
 orifice 
...
 area
...
 Latex
 $$ ND_{Lfom} $$ 
...
nominal 
...
 diameter 
...
 of 
...
 the 
...
 riser 
...
 pipe 
...
 and 
...
 rapid 
...
 mix 
...
 pipe
...
 Latex
 $$ EN_{PipeSpec} $$ 
...
 enumerated 
...
 type 
...
 of 
...
 pipe
...
 Latex
 $$ HL_{Rm} $$ 
...
 rapid 
...
 mix 
...
 head 
...
 loss
...
 Latex
 $$ L_{RmPipe} $$ 
...
The 
...
 total 
...
 pipe 
...
 length 
...
 betweeen 
...
 the 
...
 bottom 
...
 of 
...
 the 
...
 orifices 
...
 and 
...
 the 
...
 flocculator
...
 Latex
 $$ Nu_{Water} $$ 
...
viscosity 
...
 of 
...
 water 
...
 through 
...
 the 
...
 plant
...
 Latex
 $$ E_{Pvc} $$ 
...
PVC 
...
 pipe 
...
 roughness
...
 Latex
 $$ H_{Ramp} $$ 
...
 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
...
 Latex
 $$ B_{LfomOrifice} $$ 
...
vertical 
...
 distance 
...
 between 
...
 orifices
...
 Latex
 $$ Pi_{LfomH} $$ 
...
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
...
 Latex
 $$ Q_{Ramp} $$ 
...
funtion 
...
 to 
...
 determine 
...
 target 
...
 riser 
...
 pipe 
...
 flow, 
...
 incrementally 
...
 calculates 
...
 flows
...
 Latex
 $$ Q_{LfomActual} $$ 
...
 funtion 
...
 to 
...
 determine 
...
 actual 
...
 flow 
...
 through 
...
 orifices
...
 Latex
 $$ n_{LfomOrifices} $$ 
...
 number 
...
 of 
...
 orifices
...
 Latex
 $$ D_{LfomOrifices} $$ 
...
 diameter 
...
 of 
...
 Lfom 
...
 orifices
...
 Latex
 $$ D_{Circle} $$ 
...
 function 
...
 that 
...
 determines 
...
 the 
...
 diamter 
...
 of 
...
 a 
...
 circle 
...
 given 
...
 the 
...
 area
...
 Latex
 $$ D_{Drill} $$ 
...
 function 
...
 that 
...
 determines 
...
 the 
...
 drill 
...
 bit 
...
 size 
...
 necessary
...
 Latex
 $$ N_{LfomOrificesFirstrow} $$ 
...
 arbitrary 
...
 value 
...
 determines 
...
 the 
...
 number 
...
 of 
...
 orifices 
...
 in 
...
 the 
...
 first 
...
 row, 
...
 currently 
...
 5 
...
 is 
...
 selected
...
 Latex
 $$ Q_{LfomError} $$ 
...
percent 
...
 error 
...
 in 
...
 the 
...
 actual 
...
 flow 
...
 rate 
...
 compared 
...
 to 
...
 theoretical 
...
 values
...
 Latex
 $$ Q_{LfomErrorMax} $$ 
...
maximum 
...
 error 
...
 of 
...
 Q_LfomError 
...
 array
...
 Latex
 $$ HL_{EtFloc} $$ 
...
headloss 
...
 from 
...
 the 
...
 entrance 
...
 tank 
...
 to 
...
 the 
...
 flocculator
...
 Latex
 $$ ZW_{Et} $$ 
...
 water 
...
 depth 
...
 of 
...
 entrance 
...
 tank 
...
 relative 
...
 to 
...
 the 
...
 bottom 
...
 of 
...
 the 
...
 sedimation 
...
 tank
...
 Latex
 $$ HW_{FlocStart} $$ 
...
 height 
...
 of 
...
 the 
...
 start 
...
 of 
...
 the 
...
 floculation 
...
 tank 
...
 relative 
...
 to 
...
 the 
...
 bottom 
...
 of 
...
 the 
...
 sedimention 
...
 tank
...
 Latex
 $$ H_{LfomFreefall} $$ 
...
difference 
...
 between 
...
 height 
...
 of 
...
 water 
...
 in 
...
 floculation 
...
 tank 
...
 and 
...
 the 
...
 bottom 
...
 set 
...
 of 
...
 orifices 
...
 on 
...
 the 
...
 LFOM
...
 Latex
 $$ HW_{Etmax} $$ 
...
maximum 
...
 water 
...
 level 
...
 in 
...
 entrance 
...
 tank
...
 Latex
 $$ HW_{Etmin} $$ 
...
minimum 
...
 water 
...
 level 
...
 in 
...
 entrance 
...
 tank
...
 Latex
 $$ H_{Et} $$ 
...
height 
...
 of 
...
 entrance 
...
tank walls
 Latex
 $$ H_{PlantFreeBoard} $$ 
height of entrance tank above the top of the riser pipe
 Latex
 $$ H_{
...
LfomSF}
...
 $$ 
 safety factor of height of riser pipe above top row of orifices
 Latex
 $$ L_{Lfom} $$ 
height of the riser pipe