A flow reactor assembly that helps retain agility and re-configurability of the continuous chemical processes with improved processing ability, said assembly comprising: a tubular reactor consisting of metallic or non-metallic fluidic/modular components that are arranged together in varied numbers and arrangement having single or multi feed inlets, in periodic or aperiodic sequences; using connectors that facilitate the connection with two or more similar or different components comprising; helical coil elements with similar or variable radii of curvature, pitch and diameter with single point or multi point feed arrangement, flow disrupters having a shape selected from cylindrical and polygonal such as triangular, square or pentagonal, cross-sectional or a polyhedral cavity with or without spatial variation in internal flow area and with suitable input and output connectable ports with the helical coil elements; vortex diodes comprising metallic or non-metallic, single or multiple tangential ports of the diode as an inlet and an axial port as outlet and having connectable ports with the helical coil elements; wherein the tubular reactor comprises helical coil element(s) in combination with flow disruptor(s) and/or vortex diode(s); wherein said metallic or non-metallic fluidic/modular components optionally comprise internals flow dividers; to achieve the desired residence time, reduce axial dispersion, and enhance the intensity of local mixing and chemical reaction in the said tubular reactor. a tubular reactor consisting of metallic or non-metallic fluidic/modular components that are arranged together in varied numbers and arrangement having single or multi feed inlets, in periodic or aperiodic sequences; using connectors that facilitate the connection with two or more similar or different components comprising; helical coil elements with similar or variable radii of curvature, pitch and diameter with single point or multi point feed arrangement, flow disrupters having a shape selected from cylindrical and polygonal such as triangular, square or pentagonal, cross-sectional or a polyhedral cavity with or without spatial variation in internal flow area and with suitable input and output connectable ports with the helical coil elements; vortex diodes comprising metallic or non-metallic, single or multiple tangential ports of the diode as an inlet and an axial port as outlet and having connectable ports with the helical coil elements; helical coil elements with similar or variable radii of curvature, pitch and diameter with single point or multi point feed arrangement, flow disrupters having a shape selected from cylindrical and polygonal such as triangular, square or pentagonal, cross-sectional or a polyhedral cavity with or without spatial variation in internal flow area and with suitable input and output connectable ports with the helical coil elements; vortex diodes comprising metallic or non-metallic, single or multiple tangential ports of the diode as an inlet and an axial port as outlet and having connectable ports with the helical coil elements; wherein the tubular reactor comprises helical coil element(s) in combination with flow disruptor(s) and/or vortex diode(s); wherein said metallic or non-metallic fluidic/modular components optionally comprise internals flow dividers; to achieve the desired residence time, reduce axial dispersion, and enhance the intensity of local mixing and chemical reaction in the said tubular reactor.