Chamber Sim Variables

The Reactor Chamber system simulates the transfer of thermal and radiation energy from the reaction to the reactor's inner surface, in particular the Reaction Isolation Shield (RIS) and the Primary Coolant Loop.

Inputs

Plasma Temperature (PLASDEN) is a major input from the Plasma Simulation.

The Poloidal Simulation inputs the ERV, which is used to determine the size of the reaction’s surface area and its distance from the RIS, both factors in calculating energy transmission.

Functions

The key functions (detailed below) in this simulation calculate how much thermal energy the reaction emits (Emitted Thermal Radiation (ETR)) and how much of that energy is received by the RIS (Thermal Transmission (TRT)) and Primary Coolant Loop (PCL).

Secondary inputs from the RIS are used to calculate Environmental Trnsmission (thermal and radiation) beyond the reactor chamber.

Outputs

The outputs of the TRT function are sent to the Reaction Isolation Shield (RIS) and to the Primary Coolant Loop (PCL) systems.

The RIS simulates the impact of thermal and radiation energy from the reaction on the RIS modules. The output of these systems is sent back to the Reaction Chamber system to calculate how much thermal and radiation energy escape the reactor chamber.

The PCL simulates the absorption and transfer of thermal energy away from the reactor.

Emitted Thermal Radiation (ETR)

This simulates the amount of thermal energy emitted from the reaction.

COMPONENT VAR CODE NAME DESCRIPTION EQUATION TYPE NOM UPPER LOWER MAX MIN
GLOBAL DUBPI Double PI Double PI Constant S 6.28318        
GLOBAL ORIGIN Reaction origin The reactor origin Constant S 3.5        
GLOBAL EMSVTY Plasma Emissivity Emissivity of the plasma Constant S 0.96        
GLOBAL SBCONSTANT Stefan-Boltzmann Constant   Constant S POWER(10,-9)      
SEGx SEGAFPF Segment AFPF Average of all AFPF values for segment AVG(TGENx(AVGAFPF)… TGENy(AVGAFPF)) P          
SEGx ERVSAfA ERV Surafce Area function stage A   DUBPI*ORIGIN P          
SEGx ERVSAfB ERV Surafce Area function stage B   DUBPI*SEGAFPF P          
SEGx ERVSAfC ERV Surafce Area function stage C   ERVSAfA * ERVSAfB P          
SEGx ERVSA Effective Reaction Volume Surface Area   ERVSAfC / GLOBAL(EIGHT) P          
SEGx ETRfA ETR function stage A   POWER(PTEMP,GLOBAL(FOUR)) P          
SEGx ETRfB1 ETR function stage B 1 This is broken into two steps as the system cannot recognise enough decimal places for the SB Constant 10-9, so the constant is broken down into A 10-4 and B 10-5 and applied in these two steps. SBCONSTANTA * ETRfA P          
SEGx ETRfB ETR function stage B ETRfB * SBCONSTANTB            
SEGx ETRfC ETR function stage C   ETRfB * ERVSA P          
SEGx ETR Emitted Thermal Radiation   ETRfC * EMSVTY P          

Thermal Radiation Transmission (TRT)

This simulates the transmission of thermal energy emitted by the reaction to the inner surface of the reactor (the Reaction Isolation Shield (RIS)).

COMPONENT VAR CODE NAME DESCRIPTION EQUATION TYPE NOM UPPER LOWER MAX MIN
GLOBAL INNERRAD Inner Torus Radius   Constant S 1.8        
SEGx TRTCONST TRT Constant   Constant S 0.198        
SEGx SURDIST Distance to Surface Distance to inner chamber wall INNERRAD - SEGAFPF P          
SEGx TRTfA TRT function stage A   POWER(SURDIST,GLOBAL(TWO)) P          
SEGx TRTfB TRT function stage B   TRTfA * TRTCONST P          
SEGx TRT Thermal Radiation Transmission   ETR / TRTfB P          

Environment Thermal Transmission (ETT)

This simulates the transmission of any thermal energy not captured by the Reaction Isolation Shield (RIS) through the reactor chamber wall into the general environment.

COMPONENT VAR CODE NAME DESCRIPTION EQUATION TYPE NOM UPPER LOWER MAX MIN
SEGx MAF Material Attenuation Factor   Constant S 1.3        
SEGx TAF Thermal Attenuation Factor Output from RISTM Currently stubbed as a constant P 97        
SEGx ETTfA ETT function stage A   GLOBAL(100)-TAF P          
SEGx ETTfB ETT function stage B Converts percentage to decimal ETTfA / GLOBAL(100) P          
SEGx ETTfC ETT function stage C   TRT * ETTfB P          
SEGx ETTfD ETT function stage D   ETTfC - MAF P          
SEGx ETT Environmental Thermal Transmission   TRT - ETTfD P          

Environmental Heat Load (EHL)

This simulates the impact of escaped thermal energy on the operating environment (in particular the surrounding Toroidal Field Generators)

COMPONENT VAR CODE NAME DESCRIPTION EQUATION TYPE NOM UPPER LOWER MAX MIN
GLOBAL OUTERSA Outer Surface Area Reactor chamber's outer surface area Constant S 58.033        
SEGx EHLMOD EHL System Modifier   Constant S 1000        
GLOBAL WDCF Watt Degree Centigrade  Conversion Factor   Constant S 0.03159        
SEGx EHLfA EHL function stage A   OUTERSA * EHLfA P          
SEGx EHLfB EHL function stage B   POWER(EHLfA,GLOBAL(QUARTER)) P          
SEGx EHLfC EHL function stage C   EHLfB * EHLMOD P          
SEGx EHL Environmental Heat Load   EHLfC * WDCF P