Enum Class StandardObjective

java.lang.Object

java.lang.Enum<StandardObjective>

neqsim.process.util.optimizer.StandardObjective

All Implemented Interfaces:

Serializable, Comparable<StandardObjective>, Constable, ObjectiveFunction

public enum StandardObjective
extends Enum<StandardObjective>
implements ObjectiveFunction

Standard optimization objectives commonly used in process optimization.

These objectives can be used directly or as templates for custom objectives.

Version:

1.0

Author:

ASMF

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E>

Nested classes/interfaces inherited from interface ObjectiveFunction

ObjectiveFunction.Direction

Enum Constant Summary

Enum Constants

Enum Constant	Description
MAXIMIZE_LIQUID_RECOVERY	Maximize liquid recovery (for separation processes).
MAXIMIZE_SPECIFIC_PRODUCTION	Maximize specific production (throughput per unit power).
MAXIMIZE_THROUGHPUT	Maximize total feed throughput.
MINIMIZE_COOLING_DUTY	Minimize total cooling duty.
MINIMIZE_HEATING_DUTY	Minimize total heating duty.
MINIMIZE_POWER	Minimize total power consumption (compressors + pumps).
MINIMIZE_TOTAL_ENERGY	Minimize total energy consumption (power + heating + cooling).

Constructor Summary

Constructors

Modifier	Constructor	Description
private	StandardObjective()

Method Summary

Modifier and Type	Method	Description
static ObjectiveFunction	maximizeManifoldThroughput(String manifoldName)	Create an objective for maximizing manifold throughput.
static ObjectiveFunction	maximizePumpEfficiency(String pumpName)	Create an objective for maximizing pump efficiency.
static ObjectiveFunction	maximizePumpNPSHMargin(String pumpName)	Create an objective for maximizing pump NPSH margin.
static ObjectiveFunction	maximizeStreamFlow(String streamName)	Create an objective for a specific stream's flow rate.
static ObjectiveFunction	minimizeCompressorPower(String compressorName)	Create an objective for a specific compressor's power.
static ObjectiveFunction	minimizeFIV_FRMS(String fivAnalyzerName)	Create an objective for minimizing FRMS (Flow-induced vibration RMS) on a pipeline.
static ObjectiveFunction	minimizeFIV_LOF(String fivAnalyzerName)	Create an objective for minimizing FIV LOF (Likelihood of Failure) on a pipeline.
static ObjectiveFunction	minimizeManifoldBranchLOF(String manifoldName)	Create an objective for minimizing manifold branch LOF.
static ObjectiveFunction	minimizeManifoldHeaderFRMS(String manifoldName)	Create an objective for minimizing manifold header FRMS.
static ObjectiveFunction	minimizeManifoldHeaderLOF(String manifoldName)	Create an objective for minimizing manifold header LOF (Likelihood of Failure).
static ObjectiveFunction	minimizeManifoldImbalance(String manifoldName)	Create an objective for balancing manifold split ratios.
static ObjectiveFunction	minimizeManifoldPressureDrop(String manifoldName)	Create an objective for minimizing pressure drop across a manifold.
static ObjectiveFunction	minimizeManifoldVelocityRatio(String manifoldName)	Create an objective for keeping manifold header velocity below erosional limits.
static ObjectiveFunction	minimizePipelineVibration(String pipelineName, String method, String supportArrangement)	Create a pipeline FIV analyzer objective directly from a pipeline.
static ObjectiveFunction	minimizePumpPower(String pumpName)	Create an objective for a specific pump's power.
static ObjectiveFunction	minimizeStreamFlow(String streamName, String unit)	Create an objective for a specific stream's flow rate.
static StandardObjective	valueOf(String name)	Returns the enum constant of this class with the specified name.
static StandardObjective[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ObjectiveFunction

evaluate, evaluateNormalized, getDirection, getName, getUnit

Enum Constant Details

MAXIMIZE_THROUGHPUT

public static final StandardObjective MAXIMIZE_THROUGHPUT

Maximize total feed throughput.

MINIMIZE_POWER

public static final StandardObjective MINIMIZE_POWER

Minimize total power consumption (compressors + pumps).

MINIMIZE_HEATING_DUTY

public static final StandardObjective MINIMIZE_HEATING_DUTY

Minimize total heating duty.

MINIMIZE_COOLING_DUTY

public static final StandardObjective MINIMIZE_COOLING_DUTY

Minimize total cooling duty.

MINIMIZE_TOTAL_ENERGY

public static final StandardObjective MINIMIZE_TOTAL_ENERGY

Minimize total energy consumption (power + heating + cooling).

MAXIMIZE_SPECIFIC_PRODUCTION

public static final StandardObjective MAXIMIZE_SPECIFIC_PRODUCTION

Maximize specific production (throughput per unit power).

MAXIMIZE_LIQUID_RECOVERY

public static final StandardObjective MAXIMIZE_LIQUID_RECOVERY

Maximize liquid recovery (for separation processes).

Constructor Details

StandardObjective

private StandardObjective()

Method Details

values

public static StandardObjective[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static StandardObjective valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

maximizeStreamFlow

public static ObjectiveFunction maximizeStreamFlow(String streamName)

Create an objective for a specific stream's flow rate.

Parameters:

streamName - name of the stream to maximize

Returns:

objective function

Throws:

IllegalArgumentException - if streamName is null or empty

minimizeCompressorPower

public static ObjectiveFunction minimizeCompressorPower(String compressorName)

Create an objective for a specific compressor's power.

Parameters:

compressorName - name of the compressor

Returns:

objective function

Throws:

IllegalArgumentException - if compressorName is null or empty

minimizePumpPower

public static ObjectiveFunction minimizePumpPower(String pumpName)

Create an objective for a specific pump's power.

Parameters:

pumpName - name of the pump

Returns:

objective function

Throws:

IllegalArgumentException - if pumpName is null or empty

maximizePumpEfficiency

public static ObjectiveFunction maximizePumpEfficiency(String pumpName)

Create an objective for maximizing pump efficiency.

Parameters:

pumpName - name of the pump

Returns:

objective function

Throws:

IllegalArgumentException - if pumpName is null or empty

maximizePumpNPSHMargin

public static ObjectiveFunction maximizePumpNPSHMargin(String pumpName)

Create an objective for maximizing pump NPSH margin.

NPSH margin = NPSHa / NPSHr. Higher values indicate more cavitation safety.

Parameters:

pumpName - name of the pump

Returns:

objective function

Throws:

IllegalArgumentException - if pumpName is null or empty

minimizeStreamFlow

public static ObjectiveFunction minimizeStreamFlow(String streamName,
 String unit)

Create an objective for a specific stream's flow rate.

Parameters:

streamName - name of the stream to minimize

unit - flow rate unit (e.g., "kg/hr", "Sm3/hr")

Returns:

objective function

Throws:

IllegalArgumentException - if streamName is null or empty

minimizeFIV_LOF

public static ObjectiveFunction minimizeFIV_LOF(String fivAnalyzerName)

Create an objective for minimizing FIV LOF (Likelihood of Failure) on a pipeline.

LOF values: <0.5 (low risk), 0.5-1.0 (medium risk), >1.0 (high risk). Minimizing LOF reduces vibration-induced fatigue failure risk.

Parameters:

fivAnalyzerName - name of the FlowInducedVibrationAnalyser measurement device

Returns:

objective function

Throws:

IllegalArgumentException - if fivAnalyzerName is null or empty

minimizeFIV_FRMS

public static ObjectiveFunction minimizeFIV_FRMS(String fivAnalyzerName)

Create an objective for minimizing FRMS (Flow-induced vibration RMS) on a pipeline.

FRMS measures vibration intensity. Lower values indicate safer operation.

Parameters:

fivAnalyzerName - name of the FlowInducedVibrationAnalyser measurement device

Returns:

objective function

Throws:

IllegalArgumentException - if fivAnalyzerName is null or empty

minimizePipelineVibration

public static ObjectiveFunction minimizePipelineVibration(String pipelineName,
 String method,
 String supportArrangement)

Create a pipeline FIV analyzer objective directly from a pipeline.

This creates a temporary FlowInducedVibrationAnalyser and evaluates it. For repeated optimization, prefer adding the analyzer to the process and using minimizeFIV_LOF().

Parameters:

pipelineName - name of the PipeBeggsAndBrills pipeline

method - "LOF" for Likelihood of Failure, "FRMS" for RMS method

supportArrangement - for LOF: "Stiff", "Medium stiff", "Medium", or other

Returns:

objective function

Throws:

IllegalArgumentException - if pipelineName is null or empty

maximizeManifoldThroughput

public static ObjectiveFunction maximizeManifoldThroughput(String manifoldName)

Create an objective for maximizing manifold throughput.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty

minimizeManifoldPressureDrop

public static ObjectiveFunction minimizeManifoldPressureDrop(String manifoldName)

Create an objective for minimizing pressure drop across a manifold.

Calculates the maximum pressure drop from any inlet to the mixed outlet.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty

minimizeManifoldImbalance

public static ObjectiveFunction minimizeManifoldImbalance(String manifoldName)

Create an objective for balancing manifold split ratios.

Returns the standard deviation of split ratios. Lower values indicate more balanced distribution.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty

minimizeManifoldHeaderLOF

public static ObjectiveFunction minimizeManifoldHeaderLOF(String manifoldName)

Create an objective for minimizing manifold header LOF (Likelihood of Failure).

LOF values: <0.5 (low risk), 0.5-1.0 (medium risk), >1.0 (high risk). This uses the manifold's built-in FIV calculations based on header geometry and flow.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty

minimizeManifoldBranchLOF

public static ObjectiveFunction minimizeManifoldBranchLOF(String manifoldName)

Create an objective for minimizing manifold branch LOF.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty

minimizeManifoldHeaderFRMS

public static ObjectiveFunction minimizeManifoldHeaderFRMS(String manifoldName)

Create an objective for minimizing manifold header FRMS.

FRMS measures vibration intensity. Lower values indicate safer operation.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty

minimizeManifoldVelocityRatio

public static ObjectiveFunction minimizeManifoldVelocityRatio(String manifoldName)

Create an objective for keeping manifold header velocity below erosional limits.

Returns the ratio of header velocity to erosional velocity. Values >0.8 indicate risk.

Parameters:

manifoldName - name of the manifold

Returns:

objective function

Throws:

IllegalArgumentException - if manifoldName is null or empty