SIDLAB 3.0 Release Highlights

General

  • Completely new Interface
  • All actions, options, and settings in ONE Window.
  • Easier to navigate through the software.
  • Same appearance as standard Windows Applications
  • Supported operating systems, Windows XP/7 32 bit and 64 bit.
  • Faster and consumes less memory.
  • (.sid) files can be directly opened by double clicking in Windows Explorer.
  • Easier and smarter to setup: Fewer steps – one procedure independent of the license type and licensed products.
  • Ability to work with different unit systems to define the dimensions of the network: m, mm and inch.
  • New startup interface giving the possibility to define: Task, Application, Network Type, and Unit System.
  • New help interface with dynamic links.
  • Ability to save different versions of the network in one project file, and compare them together.
  • The fluid medium can be a perfect gas or a liquid.
  • Library of fluids with their properties.
  • Ability to run without opening MATLAB, even for the open MATLAB files installations. This saves time and system memory. Connection with MATLAB is optional.
  • The new version is backward compatible with SIDLAB 2.5 and SIDLAB 2.6 files.

License Activation

  • New activation system:  easier and faster.
  • Automatic activation request.
  • Possibility to send manual activation requests if the computer firewall prevents the automatic request.
  • Floating Network License available.

Element Manager

  • Easier to work with elements and define their properties.
  • All elements and sources are in the same interface.
  • Add new elements, delete elements, and modify their list of properties.
  • Elements are application divided, with the ability to assign elements to different applications.
  • Properties can be defined as:
    • Single Value
    • A list of options
    • Logical: True or False
  • For each property, you define if it is needed or not, and its default value.

Fluids Manager

  • This is a library of the properties of different gases and liquids.
  • Ability to add custom fluids to the library.
  • Ability to add, delete or edit the properties of each fluid.

Version Manager

  • It is possible to save several versions of the network and results within a single project. This gives the possibility to monitor the effect of changes done on the network.
  • Delete old versions, or loading them back into the workspace.
  • Compare the current results with other versions.

Network Drawing in 2D

  • New look for the network in 2D.
  • Elements can be rotated clockwise or counter clockwise to make the network drawing more logical.
  • Connections help by highlighting the side of the element which will be connected. This is especially useful for multi-ports.
  • Elements and nodes are automatically numbered according to the order they are drawn.
  • Delete, copy, and paste elements.
  • Paste element properties into another element provided they have the same type.
  • Show and hide the elements and nodes numbers.
  • Capture a snapshot of the network and save it as a picture file.
  • Align elements horizontally or vertically.
  • Selection list for elements and nodes to facilitate selection.
  • Edit the colors of different parts of the network.

Network Drawing in 3D

  • A new feature in SIDLAB 3.0 is to draw the network in 3D. This has no influence on the calculation. 3D Networks are only for visualization purposes.
  • All features of network drawn in 2D are also available for 3D mode.

SIDLAB Acoustics

  • New capabilities have been added so that the following calculated results can be shown:
    • Passive Results:               
      • Transmission Loss in dB
      • Noise Reduction in dB, narrow band, octave and one-third octave.
      • Insertion loss in dB
      • System Resonances
      • The elements of the transfer matrix for each element and for the full network.
      • The elements of the scattering matrix for each element and for the full network.
    • Active Results:
      • Sound pressure RMS at each node in the network. (Pa or dB, narrowband, octave and one-third octave).
      • Sound pressure phase at each node in the network.
      • Sound power exchange to and from the network at each node. (W or dB, narrowband, octave and one-third octave).
      • Sound pressure RMS outside the network at a predefined receiver position. (Pa or dB, narrowband, octave and one-third octave).
      • Transfer function between any two nodes in the network.
  • When working with user defined files, the frequency range is taken from this file automatically.
  • Ability to work for certain order vs. engine RPM. The frequency vector is calculated automatically. Extra needed input data is the inlet flow and temperature at each RPM.
  • Set any number of elements as acoustically transparent to investigate its contribution to the result.

SIDLAB Flow

  • Inlet flow can be defined as:
    • Mass flow in kg/s
    • Flow velocity in m/s
    • Flow Mach number
  • Calculated Results for Flow:
    • Flow distribution: how much flow in kg/s going through each element.
    • Pressure drop across each element in the network for the given inlet mass flow.
    • Flow Mach number in each element.
    • Flow – pressure drop curve for the system.
  • Ability to recalculate acoustics and use the same old flow calculation. This is useful in the case something is changed in the network that only affects Acoustics not Flow.
  • Calculation of the flow – pressure drop is optional. This reduces the calculation of the flow by half.

New in Elements

  • The element properties are divided into two categories: Dimensional and Thermo. The dimensional properties contain all characteristics of the element; whereas the thermo properties contain information about the fluid type, temperature, pressure and flow.
  • A new Outlet category is added for one-ports which determines the receiver position with respect to the one-port outlet. This is used for the calculation of the sound pressure RMS outside the network.
  • It is now possible to define different fluids for each element.
  • New way to define the properties of the absorbing materials, where applicable. The absorbing material can be glass wool or Rockwool. It can be characterized by the flow resistivity or the density.
  • Modifications to the current two-port elements:
    • Horn element is renamed to diffuser. There is no need to define the number of segments which is calculated automatically based on the highest frequency of interest to maintain acceptable accuracy.
    • Quarter Wave element is renamed to QW Resonator. Flow losses at the inlet of the resonator can be switched on or off. The flow losses are calculated based on the flow losses in the Perforate element.
    • Helmholtz element is renamed to H Resonator. Flow losses at the inlet of the resonator can be switched on or off. The flow losses are calculated based on the flow losses in the Perforate element. User may turn the neck end correction on and off. The added neck resistance property is removed.
    • Catalytic Converter element is renamed to Catalyst.
    • Expansion Chamber element: The number of higher order modes is now fixed to 5 higher order modes. Pipes are added to the inlet and outlet of the chamber to account for the extended inlet and outlet, if any.
    • User Defined 2P element is renamed to User Defined TM. The transfer matrix data of the user defined file can be interpolated to the project frequency vector. The transfer matrix data can also be corrected for the difference between the data temperature and the project temperature.
  • Modifications in the current one-port elements:
    • The Free Space and Baffle elements are combined into one element: Open End.
    • Constant 1P element is renamed to Constant Impedance.
    • User Defined 1P element is renamed to User Defined Impedance. The impedance data of the user defined file can be interpolated to the project frequency vector. The impedance data can also be corrected for the difference between the data temperature and the project temperature.
  • New two-port elements added:
    • Duct element, which is similar to the Pipe element. The Pipe has a circular cross section and is characterized by area or diameter, whereas the Duct has a rectangular cross section and is characterized by width and height. 
    • Diffuser Rectangular, which is similar to the Diffuser element but with rectangular cross section.
    • Area Expansion Rectangular and Area Contraction Rectangular, which are similar to the Area Expansion and Area Contraction elements respectively, but with rectangular cross section.
    • Spoiler element
    • Elbow, circular and rectangular elements
    • Inlet and Outlet End Caps with side inlet and side outlet, respectively, have been added.
  • New one-port elements added
    • IC Engine. This provides approximate constant impedance for IC Engine, either for exhaust or intake.
  • New multi-port elements added:
    • Perforated 8P element which is an extension to the Perforated 4P and 6P. The eight-port element is divided into a number of two-ports in the same way it is done for the four- and six-ports.
    • A Cross and T elements are added, both circular and rectangular cross sections. These elements currently have no effect on the acoustics and flow solutions, but are only required for the 3D network drawing. Their acoustic and flow effects will be included in future SIDLAB versions.
    • The User-Defined four-ports element has been removed.
  • New sources added:
    •  IC Engine. This provides estimate for the source strength vs. frequency at a certain operating condition.

Plots inside SIDLAB

  • All plot handling is now done inside SIDLAB Interface.
  • Zoom in, out and zoom window within the plot area.
  • Add or remove grids.
  • Handle multi-series plots.
  • Set the plot properties (x and y axes labels, title, background color … etc.)
  • Set the properties of each series plot (Line color and type, and Series name).
  • Add a Legend, and edit the names of different series.
  • Use a crosshair pointer to read the values of the plot.
  • Change the frequency axis between linear and logarithmic scale.
  • Send the plot to the printer with one click.
  • Save a snapshot of the plot in Picture format.
  • Copy the plot into the clipboard to be pasted easily in any other Windows application.
  • Save the plot in binary format with all its properties in (.sidplot) file, which can be imported in another SIDLAB project.
  • Export the plot into ascii or MATLAB formats.
  • Compare the current results with:
    • Another saved (.sid) project.
    • SIDLAB 2.6 project.
    • Data in ascii format.
    • Data in MATLAB format.
    • Other versions within the same project.

Optimization

  • New optimization features.
  • Can handle any number of optimization variables/parameters in the network with lower and upper boundaries for each variable.
  • Ability to define equality and non-equality constraints.
  • Ability to optimize Transmission Loss, Insertion Loss, and the Radiated Pressure from the network openings.
  • Ability to include the allowable pressure drop as a constraint.
  • Ability to maximize the performance at a single frequency, or a range of frequencies.
  • Ability to optimize the performance to exceed a certain target curve.
  • After optimization, you can compare the optimized design with the original design and then you can choose to apply the optimized dimensions to the network.

Parameterization

  • Ability  to choose a single parameter inside the network, perform a parametric analysis by varying the value of this parameter within a specified range with a specified step.
  • The results are shown for all values of the parameter simultaneously.
  • Ability to choose a certain solution and update the network with the parameter value of this solution.

SIDLAB Measurement

  • Calculates the passive properties of two-ports using the two source technique. The input parameters are the rig dimensions and both upstream and downstream transfer functions between the microphones.
  • The transfer functions can be given in MATLAB (.mat) files, or in ascii format.
  • Three microphone configurations are now available. The third configuration comprises only two microphones on each side.
  • Ability to extract the effect of inlet and outlet cones before and after the test object.
  • New results have been added so that the following calculated results can be shown:
    • Transmission Loss in dB
    • Noise Reduction in dB, narrow band, octave and one-third octave.
    • The elements of the Transfer Matrix for the test object.
    • Transfer functions between any microphone pair.
  • Correct the TL results for another temperature to simulate a real engine condition.