m	Sensor Mass
xs	Sensor Position
b	Damping Coefficient
k	Spring Constant
Fm	Time-Dependent Excitation Force
Ff	Time-Dependent Shear Force
Ls	Characteristic Length of Sensor
Ly	Vertical Penetration Depth of Oscillating Sensor
f	Sensor Frequency
xs	Sensor Position
b	Damping Coefficient
k	Spring Constant
Fm	Time-Dependent Excitation Force
Ff	Time-Dependent Shear Force
Ls	Characteristic Length of Sensor
Ly	Vertical Penetration Depth of Oscillating Sensor
f	Sensor Frequency
a	Sensor Amplitude
U	Characteristic Flow Velocity Scale
L	Characteristic Flow Length Scale
τ0	Mean Wall Shear Stress
ρ	Density of Flow
a*	Amplitude Ratio
Y*	Penetration Depth Ratio
L*	Flow/Sensor Length Ratio
ν	Kinematic Viscosity
Re	Reynolds Number
St	Strouhal Number
Hr	Hummer Number
x,y	Cartesian Coordinates
u,v	x and y Velocity Components
u′, v′	x and y Fluctuating Velocity
x*, y*	Normalized Cartesian Coordinates
u*,v*	x and y Normalized Fluctuating Velocity Components
u*′, v*′	x and y Normalized Fluctuating Velocity Components
t	Time
μ	Dynamic Viscosity
Ue	Edge Velocity
X	Non-Dimensional Streamwise Coordinate
T	Non-Dimensional Time
η	Non-Dimensional Vertical Coordinate
P1,P2,P3	Known values in the simplified boundary layer equations
U0	Edge Velocity at t=0
ψ	Stream Function
Us	Sensor Velocity
P, Q, R	Locations Where Differences are Determined in Zig-Zag Scheme
< >	Time Average
ω	Angular Frequency
	Fluctuating Skin Friction
τ	Wall Shear Stress
A	Peak-to-peak Amplitude of the Sensor
Aτ = 0	Peak-to-peak Amplitude of the Sensor at zero shear stress level