rowingphysics package¶
Submodules¶
rowingphysics.crew module¶
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class
rowingphysics.crew.
combirecovery
(strokelength, p1=0.95, q1=0.5)¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
cosinusrecovery
(strokelength, p1=0.95)¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
crew
(mc=80.0, strokelength=1.4, tempo=30.0, frac=0.5, recprofile=<rowingphysics.crew.sinusrecovery instance at 0x060B4BE8>, strokeprofile=<rowingphysics.crew.trapezium instance at 0x060B4C10>, technique=<rowingphysics.crew.technique_meas instance at 0x060B4C38>, maxpower=1000.0, maxforce=1000.0)¶ -
dxhandle
(vavg, trecovery, time)¶
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forceprofile
(favg, x)¶
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vcm
(vhandle, xhandle)¶
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vcma
(vhandle, xhandle)¶
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vha
(vcm, xhandle)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
flatrecovery
¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
genericrecovery
(strokelength, As=array([ 1.]), ws=array([ 1.]), phis=array([ 0.]))¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
realisticrecovery
¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
sinusrecovery
¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
sinusrecovery2
(strokelength, p1=1.0)¶ -
dxhandle
(vavg, trecovery, time)¶
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vhandle
(vavg, trecovery, time)¶
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class
rowingphysics.crew.
technique_meas
¶ -
vcm
(vhandle, strokelength, xhandle)¶
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vcma
(vhandle, strokelength, xhandle)¶
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vha
(vcm, strokelength, xhandle)¶
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rowingphysics.erg module¶
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class
rowingphysics.erg.
erg
(drag=0.0004, inertia=0.1001, cord=1.2, r=0.02, cordlength=1.0)¶
rowingphysics.rigging module¶
rowingphysics.row_functions module¶
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rowingphysics.row_functions.
blade_force
(oarangle, rigging, vb, fblade, doplot=0)¶
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rowingphysics.row_functions.
d_recovery
(dt, v, vc, dvc, mc, mb, alef)¶
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rowingphysics.row_functions.
d_stroke
(dt, v, vc, dvc, mc, mb, alef, F)¶
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rowingphysics.row_functions.
de_footboard
(mc, mb, vs1, vs2)¶
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rowingphysics.row_functions.
drag_eq
(displacement, velo, alfaref=3.5, doprint=0, constantdrag=0)¶
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rowingphysics.row_functions.
vboat
(mc, mb, vc)¶
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rowingphysics.row_functions.
vhandle
(v, lin, lout, mc, mb)¶
rowingphysics.rowingphysics module¶
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rowingphysics.rowingphysics.
atkinsoncalc
(F, crew, rigging, v0=4.3801, dt=0.03, doplot=1, doprint=0, timewise=0, constantdrag=0)¶
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rowingphysics.rowingphysics.
constantratio
(ratio, crew, rigging, timestep=0.03, aantal=5, aantal2=5, Fmin=100, Fmax=400, catchacceler=5)¶ Finds the force, power and speed needed to achieve a certain drive/recovery ratio
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rowingphysics.rowingphysics.
constantrecovery
(trecovery, crew, rigging, timestep=0.03, aantal=5, aantal2=5, Fmin=100, Fmax=400)¶ Finds the force, power and average boat speed to row a given stroke rate with a recovery duration of trecovery seconds
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rowingphysics.rowingphysics.
constantvelo
(velo, crew, rigging, timestep=0.03, aantal=5, aantal2=5, Fmin=100, Fmax=400, catchacceler=5)¶ Returns the force and power needed to achieve average boat speed of velo
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rowingphysics.rowingphysics.
constantwatt
(watt, crew, rigging, timestep=0.03, aantal=5, aantal2=5, Fmin=50, Fmax=1000, catchacceler=5)¶ Returns force, average speed given an input power in watt
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rowingphysics.rowingphysics.
constantwatt_erg
(watt, crew, erg, timestep=0.03, aantal=5, aantal2=5, ratiomin=0.4, ratiomax=0.8, theconst=0.0)¶ Returns drive/recovery ratio, force given an input power (watt)
The power is the total power (not only what the erg display shows)
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rowingphysics.rowingphysics.
constantwatt_ergdisplay
(watt, crew, erg, timestep=0.03, aantal=10, aantal2=10, ratiomin=0.3, ratiomax=0.8, theconst=0.0, catchacceler=5)¶ Returns drive/recovery ratio given an input power (watt)
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rowingphysics.rowingphysics.
drag_eight
()¶ Plots the drag force of an eight
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rowingphysics.rowingphysics.
drag_pair
()¶ Plots the drag force of a pair
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rowingphysics.rowingphysics.
drag_skif
()¶ Plots the drag of a single as a function of boat speed
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rowingphysics.rowingphysics.
empirical
(datafile, vavg, crew, rigging, tstroke, trecovery, doplot=1)¶ Reads in empirical acceleration data to be compared with acceleration plot
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rowingphysics.rowingphysics.
energybalance
(F, crew, rigging, v0=4.3801, dt=0.03, doplot=1, doprint=0, timewise=0, index_offset=1, empirical=0, empt0=0, vb0=0, catchacceler=5.0, emptype='acceler')¶ calculates one stroke with average handle force as input slide velocity and stroke/recovery ratio are calculated knows about slip, lift, drag. Plots energy balance.
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rowingphysics.rowingphysics.
energybalance_erg
(ratio, crew, erg, w0=4.3801, dt=0.03, doplot=1, doprint=0, theconst=0.1)¶ calculates one stroke with ratio as input, using force profile in time domain
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rowingphysics.rowingphysics.
energybalance_erg_old
(F, crew, erg, w0=4.3801, dt=0.03, doplot=1, doprint=0, timewise=0)¶
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rowingphysics.rowingphysics.
energybalance_old
(F, crew, rigging, v0=4.3801, dt=0.03, doplot=1, doprint=0, timewise=0)¶
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rowingphysics.rowingphysics.
ergtoboatspeed
(min, sec, ratio, crew, rigging, erg)¶ Calculates boat speed, given an erg split for given crew, boat, erg
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rowingphysics.rowingphysics.
ergtopower
(min, sec, ratio, crew, erg)¶ Returns total power, erg display power and kinetic power given a split in min, sec
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rowingphysics.rowingphysics.
main
()¶
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rowingphysics.rowingphysics.
plotforce
(fhandle, rigging, vb, oarangle=0.01)¶ iterates slip using “real” fulcrum point aantal = nr iterations
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rowingphysics.rowingphysics.
powertoerg
(pw, ratio, crew, erg)¶ Returns erg power, kinetic power and erg split for a given input power
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rowingphysics.rowingphysics.
read_obj
(filename)¶
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rowingphysics.rowingphysics.
stroke
(F, crew, rigging, v0, dt, aantal, doplot=0, timewise=0, catchacceler=5)¶ Calculates a few (aantal) strokes and returns parameters averaged over those strokes
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rowingphysics.rowingphysics.
stroke_atkinson
(F, crew, rigging, v0, dt, aantal, timewise=0, constantdrag=0)¶
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rowingphysics.rowingphysics.
stroke_erg
(ratio, crew, erg, w0, dt, aantal, doplot=0, theconst=0.0)¶ Calculates a number (aantal) erg strokes and returns parameters averaged over the strokes
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rowingphysics.rowingphysics.
testbladeforce
(fhandle, rigging, vb, oarangle=0.01, aantal=10)¶ iterates slip using “real” fulcrum point aantal = nr iterations
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rowingphysics.rowingphysics.
time500mtovavg
(minutes, secs)¶ Calculates velocity from pace in minutes, seconds)
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rowingphysics.rowingphysics.
vavgto500mtime
(vavg)¶ Calculates 500m time (minutes, seconds) from velocity
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rowingphysics.rowingphysics.
write_obj
(obj, filename)¶
rowingphysics.rowplots module¶
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rowingphysics.rowplots.
atkinson
(timestep=0.01, factor=0.45, doplot=1, h1=0.75, h2=1.0, timewise=0, x1=0.02, x2=0.39, bladearea=0.071, lscull=3.05, lin=0.86, strokelength=1.31, constantdrag=0)¶
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rowingphysics.rowplots.
catchangleseries
(anglemin, anglemax, F, crew, rigging, aantal=30, timestep=0.03)¶ Plots various plots as a function of catch angle
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rowingphysics.rowplots.
catchseriesRIM
(anglemin, anglemax, F, crew, rigging, aantal=30, timestep=0.03, doplot=1, timewise=0)¶ Various plots for different catch angles and style
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rowingphysics.rowplots.
ergtoboat
(splits, r, rg, tempos, erg)¶
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rowingphysics.rowplots.
forceseries
(Forcemin, Forcemax, tempo, crew, rigging, aantal=10, timestep=0.03)¶
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rowingphysics.rowplots.
james_hm2min
(timestep=0.01, factor=0.86, doplot=1, h1=1.0, h2=0.8, timewise=0, x1=0.03, x2=0.35, bladearea=0.1212)¶
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rowingphysics.rowplots.
longlegs
(rg, doplot=1, v0=3.962)¶
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rowingphysics.rowplots.
plot_blade
()¶ Plots blade lift and drag coefficients vs angle of attack
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rowingphysics.rowplots.
plot_boatweight_power_constantv
(velo, r, rg, aantal=10, timestep=0.01)¶
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rowingphysics.rowplots.
plot_catchangle_v_constantwatt
(watt, r, rg, aantal=10, timestep=0.03)¶
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rowingphysics.rowplots.
plot_inboard_power_constantv
(velo, r, rg, aantal=10, timestep=0.03)¶ Plots power at given boat speed for various values of inboard
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rowingphysics.rowplots.
plot_ratio_v_constantwatt
(watt, r, rg, aantal=10, timestep=0.03)¶
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rowingphysics.rowplots.
plot_tempo_power_constantv
(velo, r, rg, aantal=10, timestep=0.03, Fmin=50, Fmax=650)¶ Plots power needed to achieve certain boat speed at various stroke rates
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rowingphysics.rowplots.
plot_tempo_v_constantwatt
(watt, r, rg, aantal=10, timestep=0.03, Fmin=100, Fmax=760, tempomin=20, tempomax=40)¶ Plots average boat speed at constant power with varying spm
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rowingphysics.rowplots.
plotforcecurve
(F, cr, aantal=50)¶ Plots different force curves
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rowingphysics.rowplots.
plotforcecurveRIM
(F, cr, aantal=50)¶ More force curve plots
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rowingphysics.rowplots.
plotrecstyle
(crew, trecovery, aantal=50, empirical=0)¶ Plots position of handle and CM during recovery
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rowingphysics.rowplots.
plotrowerforcecurve
(F, cr, aantal=50)¶ Plots the force curve
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rowingphysics.rowplots.
powerseries
(powers, r, rg)¶ Prints boat splits at power values in powers
Example: powerseries([200,250,300],r,rg)
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rowingphysics.rowplots.
recoverystyleseries
(tempomin, tempomax, F, crew, rigging, aantal=30, timestep=0.03, doplot=1, timewise=0)¶ Various plots with varying recovery style
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rowingphysics.rowplots.
recoverystyletriangle
(tempomin, tempomax, F, crew, rigging, aantal=30, timestep=0.03, doplot=1, timewise=0)¶
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rowingphysics.rowplots.
shortlegs
(rg, doplot=1, v0=3.997)¶
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rowingphysics.rowplots.
styleseries
(tempomin, tempomax, F, crew, rigging, aantal=30, timestep=0.03, doplot=1, timewise=0)¶ Power velocity curve for various rowing styles
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rowingphysics.rowplots.
styleseriesRIM
(tempomin, tempomax, F, crew, rigging, aantal=30, timestep=0.03, doplot=1, timewise=0)¶ Various plots for different stroke rates and rowing styles
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rowingphysics.rowplots.
styleseriesforce
(Fmin, Fmax, crew, rigging, aantal=30, timestep=0.03, doplot=1, timewise=0)¶ Plots various plots for varying forces
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rowingphysics.rowplots.
tempopower
(r, rg, tp, pw)¶
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rowingphysics.rowplots.
tempopowererg
(r, rg, erg, tp, pwd, theconst=0.0)¶
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rowingphysics.rowplots.
temposeries
(tempomin, tempomax, F, crew, rigging, aantal=30, timestep=0.03)¶ Various plots as a function of spm, fixed force
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rowingphysics.rowplots.
temposeriesvaughan
(tempomin, tempomax, F, crew, rigging, aantal=30, timestep=0.03)¶ plot maximum, minimum and average boat speed in a range of spm