onlinechannel16.php:   Calculation of initial and sequent depths in a hydraulic jump Initial [y1] and sequent {y2] depths in a hydraulic jump Formulas: Assume F1 = 2 and confirm, or iterate. y2/y1 = (1/2) [(1 + 8F12)1/2 - 1] y1 = 4 ΔE (y2/y1) / [(y2/y1) - 1]3 v1 = q/y1 F1 = v1/(gy1)1/2 INPUT DATA: Select:    SI units (metric) U.S. Customary units Energy loss ΔE:   Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel16.php on line 171 Unit-width discharge q:  Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlinechannel16.php on line 178 INTERMEDIATE CALCS: Units selected:    Warning: Undefined variable $unitsystemsname in /var/www/html/ponce/onlinechannel16.php on line 185 Grav. acceleration [ g ]:    Warning: Undefined variable $gravity in /var/www/html/ponce/onlinechannel16.php on line 186 Warning: Undefined variable $accelerationunits in /var/www/html/ponce/onlinechannel16.php on line 186 Flow velocity v1:    Warning: Undefined variable $usflowvelocity in /var/www/html/ponce/onlinechannel16.php on line 188 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlinechannel16.php on line 188 Warning: Undefined variable $velocityunits in /var/www/html/ponce/onlinechannel16.php on line 188 Froude number F1:    Warning: Undefined variable $usfroudenumber in /var/www/html/ponce/onlinechannel16.php on line 189 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlinechannel16.php on line 189 OUTPUT: Flow depth y1:    Warning: Undefined variable $usflowdepth in /var/www/html/ponce/onlinechannel16.php on line 197 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlinechannel16.php on line 197 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel16.php on line 197 Flow depth y2:    Warning: Undefined variable $dsflowdepth in /var/www/html/ponce/onlinechannel16.php on line 199 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlinechannel16.php on line 199 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel16.php on line 199 Flow velocity v2:    Warning: Undefined variable $dsflowvelocity in /var/www/html/ponce/onlinechannel16.php on line 202 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlinechannel16.php on line 202 Warning: Undefined variable $velocityunits in /var/www/html/ponce/onlinechannel16.php on line 202 Froude number F2:    Warning: Undefined variable $dsfroudenumber in /var/www/html/ponce/onlinechannel16.php on line 203 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlinechannel16.php on line 203 Press button to or recalculate   Your request was processed at  09:50:35 am on April 5th, 2025   [ 250405  09:50:35 ]. Thank you for running onlinechannel16.php.   Please call again.   [161130]