Flow Domains & Bond Types

The tables below are categorized into several energy domains from the MADE flow

taxonomy. Each table displays the relationship between bond types, their

perturbations, recommended functions and flows, and physical examples.

For example, when an item in the system model belonging to the hydraulic domain is

assigned a 0-C bond type, a function of "Store" with input & output

flows of "flow rate" and "pressure" are recommended respectively.

Items that can be sourced from the Palette are listed in the examples column.

Links to Energy Flow Domain Tables

Select the flow domain links below to jump to the relevant tables on this page.

• Generic
• Electrical
• Hydraulic
• Pneumatics
• Mechanical (Linear)
• Mechanical (Rotational)
• Thermal

Generic Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Flow Differential	Effort	Store	Flow
0-CR
Inertance	1-I	Effort Differential	Flow	Store	Effort
1-IR1-IRC	Effort Differential	Effort	Flow	-
Resistance	0-R	Resistance, R	Effort	Control	Flow
1-R	Flow	Effort	-
Transformer	TF	Transformer Ratio	Effort	Transform	Effort
Flow	Flow	-
Gyrator	GY	Gyrator Ratio	Effort	Convert	Flow
Flow	Effort	-
Source Effort	SE	Effort Amplitude	N/A	Supply	Effort
Source Effort Sink	SESINK	Flow	Stop, Channel	N/A	-
Source Flow	SF	Flow Amplitude	N/A	Supply	Flow
Source Flow Sink	SFSINK	Effort	Stop, Channel	N/A	-
0-Junction	0-J	N/A	Flow	Branch, Merge	Flow
1-Junction	1-J	N/A	Effort	Branch, Merge	Effort

Electrical Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Current Differential	Current	Store	Voltage
0-CR	C-Capacitance, R-Resistance in Parallel
Inertance	1-I	Voltage Differential	Voltage	Store	Current
1-IR	C, R, I in Series
1-IRC	-
Resistance	0-R	Resistance, R	Current	Control	Voltage
1-R	Voltage	Current	Eddy-current Damper, Resistor

Hydraulic Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Compressibility Flow Rate	Flow rate	Store	Pressure
0-CR	Pressure Vessel with Leakage (Fluid Compressibility, C & Leakage, R)
Inertance	1-I	Pressure Differential	Pressure	Store	Flow rate
1-IR	Pressure Differential (either I or R)	I-Fluid inertia, R-flow Resistance and C-Fluid Compressibility in Fluid Line
1-IRC	-
Resistance	0-R	Flow Resistance, R	Flow Rate	Control	Pressure
1-R	Pressure	Convert	Flow Rate
Transformer	TF	Transformer Ratio	Pressure	Transform	Pressure
Flow rate	Flow rate
Gyrator	GY	Gyrator Ratio	Effort	Convert	Flow
Flow	Effort	Centrifugal Pump
Source Effort	SE	Pressure Amplitude	N/A	Supply	Pressure
Source Effort Sink	SESINK	Flow rate	Stop, Channel	N/A	Accumulator, Environmental Pressure, Reservoir
Source Flow	SF	Flow Rate Amplitude	N/A	Supply	Flow rate
Source Flow Sink	SFSINK	Pressure	Stop, Channel	N/A	-
0-Junction	0-J	N/A	Flow rate	Branch, Merge	Flow rate
1-Junction	1-J	N/A	Pressure	Branch, Merge	Pressure

Mechanical Linear Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Velocity Differential	Velocity	Store	Force
0-CR
Inertance	1-I	Force Differential	Force	Store	Velocity
1-IR	Damper, Mass
1-IRC	Damper, Mass, Spring
Resistance	0-R	Resistance, R	Velocity	Control	Force
1-R	Force	Velocity	Brake, Damper, Friction Pads
Transformer	TF	Transformer Ratio	Effort	Transform	Flow
Flow	Effort
Gyrator	GY	Gyrator Ratio	Force	Convert	Velocity
Velocity	Force
Source Effort	SE	Force Amplitude	N/A	Supply	Force
Source Effort Sink	SESINK	Velocity	Stop, Channel	N/A	-
Source Flow	SF	Velocity Amplitude	N/A	Supply	Velocity
Source Flow Sink	SFSINK	Force	Stop, Channel	N/A	-
0-Junction	0-J	N/A	Velocity	Branch, Merge	Velocity
1-Junction	1-J	N/A	Force	Branch, Merge	Force

Mechanical Rotational Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Angular Velocity Differential	Angular velocity	Store	Torque
0-CR	Torsion Spring, Shaft, Flexible Coupling with Rotary Damper in Parallel
Inertance	1-I	Torque Differential	Torque	Store	Angular Velocity
1-IR	Rotary Mass and Friction (Bearings, Belt Brake, Friction Pads)
1-IRC	-
Resistance	0-R	Resistance, R	Angular Velocity	Control	Torque
1-R	Damping	Torque	Angular Velocity	Rotary Damper, Friction (Bearings, Belt Brake, Pads)
Transformer	TF	Transformer Ratio	Torque	Transform	Torque
Angular Velocity	Angular Velocity
Gyrator	GY	Gyrator ratio	Torque	Convert	Angular Velocity
Angular Velocity	Torque
Source Effort	SE	Torque Amplitude	N/A	Supply	Torque
Source Effort Sink	SESINK	Angular Velocity	Stop, Channel	N/A	-
Source Flow	SF	Angular Velocity Amplitude	N/A	Supply	Angular Velocity
Source Flow Sink	SFSINK	Torque	Stop, Channel	N/A	-
0-Junction	0-J	N/A	Angular velocity	Branch, Merge	Angular Velocity
1-Junction	1-J	N/A	Torque	Branch, Merge	Torque

Pneumatic Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Compressibility Mass Flow Rate	Mass Flow Rate	Store	Pressure
0-CR	Compressibility Mass Flow Rate	Pressure Vessel with Leakage (C-Air Compressibility and R-Air Leakage)
Inertance	1-I	Pressure Differential	Pressure	Store	Mass Flow Rate
1-IR	Pressure Differential; Either I or R	I-Air Inertia, R-flow Resistance in Fluid Line
1-IRC	-
Resistance	0-R	Flow Resistance, R	Pressure	Control	Mass Flow Rate
1-R	Mass Flow Rate	Convert	Pressure
Transformer	TF	Transformer ratio	Pressure	Transform	Pressure
Mass Flow Rate	Mass Flow Rate
Gyrator	GY	Gyrator	Pressure	Convert	Mass Flow Rate
Mass Flow Rate	Pressure	Centrifugal Compressor
Source Effort	SE	Pressure amplitude	N/A	Supply	Pressure
Source Effort Sink	SESINK	Mass Flow Rate	Stop, Channel	N/A	Pressure Vessel, Accumulator, Environmental Pressure
Source Flow	SF	Flow Rate Amplitude	N/A	Supply	Mass Flow Rate
SFSINK	Pressure	Stop, Channel	N/A	-
0-Junction	0-J	N/A	Mass Flow Rate	Branch, Merge	Mass Flow Rate
1-Junction	1-J	N/A	Pressure	Branch, Merge	Pressure

Thermal Flow Domain

Bond Type	Perturbation	Flow in	Function	Flow out	Physical Examples
Capacitance	0-C	Heat Flow Differential	Heat Flow Rate	Store	Temperature
0-CR	Heat Flow Differential	C-Capacitance, R-Resistance in Parallel
Resistance	0-R	Thermal Resistance, R	Temperature	Control	Heat Flow Rate
1-R	Heat Flow Rate	Temperature
Transformer	TF	Transformer Ratio	Temperature	Transform	Temperature
Heat Flow Rate	Heat Flow Rate
Gyrator	GY	Gyrator ratio	Temperature	Convert	Heat Flow Rate
Heat Flow Rate	Temperature
Source Effort	SE	Temperature Amplitude	N/A	Supply	Temperature
Source Effort Sink	SESINK	Heat Flow Rate	Stop, Channel	N/A	-
Source Flow	SF	Heat Flow Rate Amplitude	N/A	Supply	Heat Flow Rate
Source Flow Sink	SFSINK	Temperature	Stop, Channel	N/A	-
0-Junction	0-J	N/A	Heat Flow Rate	Branch, Merge	Heat Flow Rate
1-Junction	1-J	N/A	Temperature	Branch, Merge	Temperature