Extra

gas_dynamics.extra.degrees(theta: float) → float

Convert from radians to degrees

Parameters

theta (float) – The angle in radians

Examples

>>> import gas_dynamics as gd
>>> rad = gd.degrees(theta=3.14159)
>>> rad
179.99984796050427
>>>

gas_dynamics.extra.radians(theta: float) → float

Convert from degrees to radians

Parameters

theta (float) – The angle in degrees

Examples

>>> import gas_dynamics as gd
>>> deg = gd.radians(theta=180)
>>> deg
3.141592653589793
>>>

gas_dynamics.extra.sind(theta: float) → float

Sine given degrees

Parameters

theta (float) – The angle in degrees

Examples

>>> import gas_dynamics as gd
>>> sine = gd.sind(theta=45)
>>> sine
0.7071067811865476
>>>

gas_dynamics.extra.arcsind(sin: float) → float

Return the arcsine in degrees

Parameters

sin (float) – The sine of theta

Examples

>>> import gas_dynamics as gd
>>> theta = gd.arcsind(sin = .7071)
>>> theta
44.99945053347443
>>>

gas_dynamics.extra.cosd(theta: float) → float

Cosine given degrees

Parameters

theta (float) – The angle in degrees

Examples

>>> import gas_dynamics as gd
>>> cosine = gd.cosd(theta=45)
>>> cosine
0.7071067811865476
>>>

gas_dynamics.extra.arccosd(cos: float) → float

Return the arccosine in degrees

Parameters

cos (float) – The cosine of theta

Examples

>>> import gas_dynamics as gd
>>> theta = gd.arccosd(.7071)
>>> theta
45.00054946652557
>>>

gas_dynamics.extra.tand(theta: float) → float

Tangent given degrees

Parameters

theta (float) – The angle in degrees

Examples

>>> tan = gd.tand(theta=45)
>>> tan
0.9999999999999999
>>>

gas_dynamics.extra.arctand(tan: float) → float

Return the arctangent in degrees

Parameters

tan (float) – The tangent of theta

Examples

>>> theta = gd.arctand(1)
>>> theta
45.0
>>>

gas_dynamics.extra.area_dia(dia=[], area=[])

Notes

Given area or diameter, return the unknown

Parameters

• dia (Diameter) –

• area (Area) –

Examples

>>> import gas_dynamics as gd
>>> area = gd.area_dia(dia=1)
>>> area
0.7853981633974483
>>> dia = gd.area_dia(area=area)
>>> dia
1.0
>>>

gas_dynamics.extra.lin_interpolate(x, x0, x1, y0, y1)

Linear interpolation formula

Notes

Given two x values and their corresponding y values, interpolate for an unknown y value at x

Parameters

• x (float) – The x value at which the y value is unknown

• x0 (float) – The x value of the first known pair

• x1 (float) – The x value of the second known pair

• y0 (float) – The y value of the first known pair

• y1 (float) – The y value of the second known pair

Examples

>>> import gas_dynamics as gd
>>> y = gd.lin_interpolate(x=5, x0=4, x1=6, y0=25, y1=33)
>>> y
29.0
>>>